Odonto-stomatologie Tropicale = Tropical Dental Journal[JOURNAL]
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200 papers
Caries risk management: effect on caries incidence in a sample of Lebanese preschool children.
Chedid NR, Bourgeois D, Kaloustian H … +2 more , Pilipili C, Baba NZ
Odontostomatol Trop · 2012 Sep · PMID 23316598
OBJECTIVES: This clinical prospective study describes how caries preventive measures applied according to caries risk affect new caries incidence in a group of preschoolers, as compared to a group where standardized cari...
OBJECTIVES: This clinical prospective study describes how caries preventive measures applied according to caries risk affect new caries incidence in a group of preschoolers, as compared to a group where standardized caries prevention is applied, regardless of risk. METHOD AND MATERIALS: Healthy children, aged four years or less, recruited at the Faculté de Médecine Dentaire, Université Saint-Joseph, Beirut, Lebanon were assigned, after parental consent, to an experimental or a control group. Caries risk was determined based on a parental questionnaire, salivary levels of Steptococcus mutans (Sm) and Lactobacillus (Lb), salivary buffer capacity, plaque levels and carious lesions prevalence, then subjects were classified into four caries risk categories. In the experimental group, preventive measures designed for each risk category were applied periodically, whereas control subjects received only standardized preventive measures at regular intervals. All subjects were reevaluated for Sm, Lb, salivary buffer capacity, plaque and new carious lesions after 24 months. RESULTS: Statistically significant reductions in salivary Sm (p=0.001) and Lb (p=0.003) levels, plaque scores (p=0) and caries incidence (p=0.003) were observed in the experimental group. In the control group, no significant differences were observed between initial and final Sm (p=0.18) and Lb (p=0.109) levels or plaque scores (p=0.255), and caries incidence was not significantly reduced (p=0.584). CONCLUSION: The present study's results suggest that caries preventive measures applied according to caries risk may reduce caries risk factors and new caries incidence in preschool-aged children. These findings deserve further investigation to benefit early childhood caries prevention on a larger scale.
[Alveolitis: review of the literature].
Laraki M, Chbicheb S, El Wady W
Odontostomatol Trop · 2012 Sep · PMID 23316597
Alveolitis are infectious complications following the dental extraction. They appear under two forms: dry, characterized by a painful syndrome and uninhabited alveolus, and suppurative, which becomes identified by provok...
Alveolitis are infectious complications following the dental extraction. They appear under two forms: dry, characterized by a painful syndrome and uninhabited alveolus, and suppurative, which becomes identified by provoked pain and alveolus filled. Their etiopathogenesis remain a subject of interrogation because of the rarity of studies concerning this complication. Nevertheless, treatment is mainly favorable by a sedation of the pain and the startup of a physiological healing. From this article, we are going to review their clinical forms, their etiology as well as the followed treatment.
Apical root resorption in patients wearing orthodontic appliances.
Ousehal L, Lazrak L, Essmaali FE … +1 more , Ngom PI
Odontostomatol Trop · 2012 Sep · PMID 23316596
The aim of our study was to evaluate the incidence of orthodontically induced root resorption during the tooth alignment and leveling phase, and to assess the impact of the variables age, sex and degree and direction of...
The aim of our study was to evaluate the incidence of orthodontically induced root resorption during the tooth alignment and leveling phase, and to assess the impact of the variables age, sex and degree and direction of incisor displacement. We studied a consulting population at the dentofacial orthopaedics unit of the Dental Consultation and Treatment Centre (DCTC), Casablanca. Our sample was composed of 30 exposed cases and 30 non-exposed cases, followed up for a period of 8 months. A survey document was drawn up for data collection, and retro-alveolar radiographic imaging was used to evaluate resorption. Our results showed that the patients receiving orthodontic treatment all developed minor root resorptions during the alignment and levelling phase in the incisor group. We found that the central incisors underwent greater resorption than the lateral incisors.
DMF from WHO basic methods to ICDAS II advanced methods: a systematic review of literature.
Clara J, Bourgeois D, Muller-Bolla M
Odontostomatol Trop · 2012 Sep · PMID 23316595
BACKGROUND: Evaluation of caries status has changed with emergence of modified ways of managing the condition. There is a need to assess the relationship between the old and new methods of registering caries. OBJECTIVE:...
BACKGROUND: Evaluation of caries status has changed with emergence of modified ways of managing the condition. There is a need to assess the relationship between the old and new methods of registering caries. OBJECTIVE: To identify the ICDAS II codes to be used to record the D-component of the DMF index as defined in the WHO Basic Methods, 1997 publication. METHOD: A review of literature published between January 2002 and January 2012 was undertaken using "ICDAS" as keyword in an electronic search. Only epidemiological studies that used ICDAS II as an evaluation criterion calculated the DMF indices and gave the ICDAS II codes for the diagnosis of caries lesions, were included. RESULTS: Fourteen studies met the inclusion criteria. The DMF designations that corresponded with the WHO definition were D(3-6)MF (10 studies), D(4-6)MF (4 studies) or D(5-6)MF (3 studies). The D-component referred to cavitated carious lesions (7 studies) or dentine caries (7 studies), but there was no consensus on the ICDAS II codes that are used to define them. Only the ICDAS II codes 5 and 6 had unanimous support; they were always counted as "Caries", but there was less certainty for codes 3 and 4. The only study on fields that compared both methods showed D(3-6) to be the always associated with the D-component of the DMF index as defined in the WHO Basic Methods. CONCLUSION: There was disagreement of the ICDAS II codes to be used for the DMF calculation; and when there was a need to compare DMF values between studies, the diagnosis threshold should be verified to be the same.
Guided bone regeneration using resorbable and non-resorbable membranes: a histological study in dogs.
Al Salamah L, Babay N, Anil S … +2 more , Al Rasheed A, Bukhary M
Odontostomatol Trop · 2012 Jun · PMID 22988790
AIM: The aim of this study was to evaluate the effectiveness of e-PTFE titanium reinforced and Guidor membranes in the management of alveolar ridge deformities. MATERIALS AND METHODS: Five beagle dogs were included in th...
AIM: The aim of this study was to evaluate the effectiveness of e-PTFE titanium reinforced and Guidor membranes in the management of alveolar ridge deformities. MATERIALS AND METHODS: Five beagle dogs were included in the study. Three through and through defects of the same size (12 x 5 x 5) were created in each animal, one on the right side and two defects 3-4 mm distant from each other on the left side. Guidor membrane was applied to the right defect, e-PTFE was applied to one of the left defects while the third defect served as control. Three, six and nine months following membrane placement, the dogs were euthanized and membranes with surrounding bone tissues harvested for histological analysis. RESULTS: Healing in each animal was uneventful with no clinical sign of inflammation. Histological evaluation indicated the defects covered with both membranes had significantly gained greater bone formation than the control defects. On the other hand, the control defects healed thin rim of bone mostly with a persistent central defect and suprabony connective tissue invasion. CONCLUSIONS: There were no significant differences in the bone volume surrounding the membranes in the two experimental groups. Control defects produced significantly less amount of bone when compared the membrane sites.
[Orthodontic treatment and gingival hyperplasia: a case report].
Bellamine M, Ousehal L, Kissa J
Odontostomatol Trop · 2012 Jun · PMID 22988789
Gingival hyperplasia is a relatively frequent pathologic condition during orthodontic treatment. Oral hygiene can be easily altered in such cases because of additive and irritative effects of orthodontics appliances. So,...
Gingival hyperplasia is a relatively frequent pathologic condition during orthodontic treatment. Oral hygiene can be easily altered in such cases because of additive and irritative effects of orthodontics appliances. So, adequate control of the gingival inflammation is required. The present case reports on a 13-year-old boy who developed, during orthodontic treatment, a gingival hypertrophy that was successfully treated with periodontal surgery consisting on an apically positioned flap procedure. For this purpose, multidisciplinary approach involving orthodontist and periodontist was crucial in the perspective of optimal clinical issues.
Relationship between dental impacts on daily living, satisfaction with the dentition and personality profiles among a Palestinian population.
Younis A, Al-Omiri MK, Hantash RO … +4 more , Alrabab'Ah M, Dar-Odeh N, Abu Hammad O, Khraisat A
Odontostomatol Trop · 2012 Jun · PMID 22988788
INTRODUCTION: The aim of this study was to investigate the relationship between dental impacts on patients' daily living, satisfaction with the dentition and personality profiles. MATERIALS AND METHODS: Fifty-two patient...
INTRODUCTION: The aim of this study was to investigate the relationship between dental impacts on patients' daily living, satisfaction with the dentition and personality profiles. MATERIALS AND METHODS: Fifty-two patients (22 males and 30 females; mean age 22.7 +/- 5.5 years) were recruited for this study. A "dental impact on daily living" (DIDL) questionnaire was used to assess patients' satisfaction with their dentition and impacts on daily living. The NEO five factor inventory (NEO-FFI) was used to assess personality profiles. RESULTS: The dentition had measurable impacts on daily living as well as satisfaction with appearance, pain levels, oral comfort, general performance, and eating capability (p < 0.001). Older patients were more totally satisfied (p = 0.014), more satisfied with appearance (p = 0.034), and less satisfied with general performance (p = 0.024). Older patients had higher Conscientiousness scores (p = 0.001) and lower Openness scores (0.018). Females were more satisfied with eating (p < 0.001). Significant correlations were established between neuroticism and total DIDL scores (p = 0.006). Extraversion had significant correlations with total satisfaction (p < 0.001) as well as satisfaction with appearance (p = 0.047) and oral comfort (p = 0.008). Significant correlations were also established between openness and satisfaction with general performance (p < 0.001), between Agreeableness and satisfaction with eating (p = 0.001), and between Conscientiousness and total satisfaction (p = 0.001), satisfaction with pain (p = 0.004), and satisfaction with oral comfort (p = 0.043). CONCLUSIONS: The status of the oral cavity might impact on patients' daily living and satisfaction with the dentition. Patients' satisfaction with their dentition has definitive impacts on daily living and dental perceptions. Personality profiles (neuroticism; extraversion; openness; agreeableness and conscientiousness) may influence dental perceptions; play a significant role in shaping satisfaction with dentition, and help with prediction of dental impacts on daily living. Patient satisfaction and psychological profiles should be considered when formulating a treatment plan in order to achieve patient acceptance of the offered treatment.
[Determination of fluoride in toothpastes marketed in Morocco using a fluoride-selective electrode].
Eljaoudi R, Ait El Cadi M, Mamouch F … +4 more , Bousliman Y, Ousaid A, Cherrah Y, Bouklouze A
Odontostomatol Trop · 2012 Jun · PMID 22988787
INTRODUCTION: Dental caries represents a problem of public health in Morocco and the reduction of this pathology is a priority of the Ministry of Health. The use of fluoride toothpastes is, at present, recognized as bein...
INTRODUCTION: Dental caries represents a problem of public health in Morocco and the reduction of this pathology is a priority of the Ministry of Health. The use of fluoride toothpastes is, at present, recognized as being an effective means for the prevention of dental caries. MATERIAL AND METHODS: [corrected] The aim of our study was to verify the correspondence of the information marked on packagings with the international standards, but also to determine using potentiometry the quantity of fluorine presents in toothpastes marketed in Morocco from three origins: pharmacies, hypermarkets and ambulant sellers. RESULTS: The study concerned 56 toothpastes, 73.2% of toothpastes respect the standards of the concerning WHO dates of manufacturing and lapsing. The type of fluoride was specified only on 67.8% of packagings and the used concentration of fluoride was indicated only in 62.5% of the tested samples. For 56 studied toothpastes, the results revealed that if we take into account standards recommended by the WHO and the European Union, only 57.1% of toothpastes could have an effect dental caries. CONCLUSION: The results of this study show that there is a real need of quality control of fluoride toothpastes sold in Morocco especially those of the itinerant market.
Substantiation of an artificial saliva formulated for use in a masticatory apparatus.
Roger-Leroi V, Mishellany-Dutour A, Woda A … +2 more , Marchand M, Peyron MA
Odontostomatol Trop · 2012 Jun · PMID 22988786
The aim of this work was to substantiate artificial saliva prepared for use in a masticator apparatus. Mastication's goal is to produce a viscous and plastic food bolus where these properties authorize a safe swallow. Ap...
The aim of this work was to substantiate artificial saliva prepared for use in a masticator apparatus. Mastication's goal is to produce a viscous and plastic food bolus where these properties authorize a safe swallow. Apart from its biochemical contribution, saliva is mainly used in this kind of apparatus to provide a viscous component to the bolus. Artificial saliva was prepared with water and minerals, and completed with mucin and amylase. Different physico-chemical conditions were applied and the resultant viscosity was compared to that of human saliva. Mechanically- or chemically-stimulated salivas of ten healthy subjects were collected. Viscosity was measured with a capillary viscometer in response to changes in measurement's temperature, air exposure or pH. The effects of circadian saliva collection and the stimulation type on viscosity of human saliva were also studied. Viscosity of artificial and human salivas was comparable. An increase in the measurement's temperature or a 30 min-exposure of saliva to air led to a significant decrease in viscosity of both types of saliva. Amylase in artificial saliva did not change viscosity. The viscosity of human saliva displayed important subject variability as well as a dependence on the stimulation type of saliva production. This work allowed a useful evaluation of the formulated artificial saliva. It exhibited similar viscosity as the natural saliva in response to different methodological conditions. Therefore the proposed artificial saliva satisfies the major requirement of viscosity for a use in the masticator apparatus designed to prepare a food bolus.
World oral health.
Gabella N
Odontostomatol Trop · 2012 Jun · PMID 22988785
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[Amalgam, composite and compomer: microbiological study].
Zogheib CM, Hardan L, Khoury CK … +1 more , Naaman NB
Odontostomatol Trop · 2012 Mar · PMID 22715643
Restorative materials have different consequences on the periodontium. The surface of these materials may influence gingival health and cause in some instances gingival inflammation. The purpose of this study was to inve...
Restorative materials have different consequences on the periodontium. The surface of these materials may influence gingival health and cause in some instances gingival inflammation. The purpose of this study was to investigate and compare, in a healthy periodontium, intracrevicular plaque bacteria (Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, Prevotella intermedia, Tannerella forsythensis and Treponema denticola), at day 0 and at 6 months, around subgingivally located amalgam, composite and compomer fillings. All the tests were negative (less than 0.1% of the sum of 103 cells), since none of the investigated pathogens were detected. It has been concluded that the material used does not have direct effect on the bacteria species developed around the restorations at this short time period.
Evaluation of a new test for candidiasis diagnosis in elderly people.
Montal S, Bousquet P, Rispail P … +1 more , Tramini P
Odontostomatol Trop · 2012 Mar · PMID 22715642
OBJECTIVE: The purpose of this study was to evaluate a new test for candidiasis diagnosis (fungi-dent color test) in an institutionalised elderly population. BACKGROUND: Yeasts normally exist in the human body flora and...
OBJECTIVE: The purpose of this study was to evaluate a new test for candidiasis diagnosis (fungi-dent color test) in an institutionalised elderly population. BACKGROUND: Yeasts normally exist in the human body flora and exploit a situation of weakness in the host. Epidemiologic analyses of yeast infection in the oral cavity showed that the most frequently involved species were Candida albicans. MATERIALS AND METHODS: This study included 73 persons in the short-term and long-term geriatric department of the Montpellier hospital. Oral examinations were performed and the presence of Candida was evaluated: the fungi-dent Color diagnostic method was compared both to the classical culture analysis method, considered as the gold standard, and to the visual clinical diagnostic. RESULTS: The fungi test yielded a sensitivity value of 64.6% (CI: 53.6% - 75.6%) and a specificity of 96.0% (CI: 92.0% - 100%), whereas the diagnostic method through clinical examination disclosed only 22.5% candidiasis. The area under the ROC curve was equal to 0.81. The mean pH value was significantly higher when candidiasis was present (6.15 vs 5.78, p = 0.007). CONCLUSION: Statistical analyses showed that the Fungi-dent-color test was eligible to be validated for community use, with better characteristics than a routine clinical diagnosis and with a reasonably rapid and reliable diagnostic outcome.
[Cephalometric determination of the occlusion plane: the Broadrick flag technique].
Ousehal L, Lazrak L, Marzak J … +1 more , Bennani A
Odontostomatol Trop · 2012 Mar · PMID 22715641
Based on the principle of the sphere of MONSON, the Broadrick flag technique constitutes a relatively simple means to determine the plan of occlusion, by using a radius fixes of 104 mm. The theory of MONSON was debated a...
Based on the principle of the sphere of MONSON, the Broadrick flag technique constitutes a relatively simple means to determine the plan of occlusion, by using a radius fixes of 104 mm. The theory of MONSON was debated a long time. Our work consists of a clinical study realized in the CCTD of Casablanca, on 31 completely toothed cases normocclusion. Its objective was triple: to calculate on the profile teleradiographies, the anatomical and geometrical rays used for the construction of SPEE curve, to see if there is concordance between these two rays and finally to compare them with the theoretical value of 104 mm. From the obtained results it would seem that: The 104 mm value, cannot be considered as a standard average to be used to determine the curve of occlusion, also the articulator such as it is designed currently cannot be used in all the patient's about is the values of their rays. In the absence of molars, the anatomical radius cannot be used in place of the geometrical radius to determine the curve of occlusion. The measured gap between the obtained curve and the plan of occlusion remains not insignificant, he can reach 3 mm for the anatomical radius and 3,5 mm for the geometrical radius. In the total edentate, the cephalometric determination of occlusion plane, by basing itself on the anatomical radius or the geometrical radius is not possible.
Central mucoepidermoid carcinoma in a previously enucleated radiolucent lesion in the mandible. A case report.
Abu-Karaky A, Al HA, Al SA … +4 more , Dibs D, Al BS, Sawair FA, Khraisat A
Odontostomatol Trop · 2012 Mar · PMID 22715640
Central muco epidermoid carcinomas (CMC) are rare tumours, representing about 2 to 3% of all mucoepidermoid carcinomas. Usually affecting the mandible, they appear as uni- or multilocular radiolucent lesions. We report a...
Central muco epidermoid carcinomas (CMC) are rare tumours, representing about 2 to 3% of all mucoepidermoid carcinomas. Usually affecting the mandible, they appear as uni- or multilocular radiolucent lesions. We report a case of CMC in a 52-year-old Middle Eastern woman who presented with pain, limitation of jaw movement and tingling sensation of the tongue, related to a radiolucent lesion in the angle of the mandible. The lesion was first detected but not diagnosed in another hospital three years earlier. We describe the progression of the lesion over the past three years and describe the clinical, radiographic, histopathological, and surgical aspects of the case.
[Comparative study of measurement of posterior tooth crowding between the dental panoramic xray and dental scanner].
Halimi A, Zaoui F
Odontostomatol Trop · 2012 Mar · PMID 22715639
The purpose of this work was to compare measurements of the posterior crowding in the mandibular arcade between two types of radiographic examinations: the dental panoramic one and the dental scanner. Our sample is compo...
The purpose of this work was to compare measurements of the posterior crowding in the mandibular arcade between two types of radiographic examinations: the dental panoramic one and the dental scanner. Our sample is composed of 12 patients before treatment orthodontic, with an average age of 16 + 4 years. These patients presented an posterior crowding on dental panoramic radiography accepted the catch of a dental scanner to re-examine this crowding. To make this study, we measured on dental panoramic radiographies and the dental scanners of each patient posterior available space and posterior necessary space according to the technique of Merrifield and we calculated the posterior crowding for each case. The comparison of the two variables was carried out by using the Test T of Student. The results our study shows that: Dental panoramic radiography raises the posterior dental crowding when this compared to the dental scanner (Student, p < 0.05). The percentage of enlarging of this crowding varies enormously between 18 % and 73% with an average of 48.58 % +/- 15, 90.
The knowledge and experience of personal and professional oral care among secondary school students in Ibadan.
Adeyemi BF, Kolude BM, Lawal AO
Odontostomatol Trop · 2012 Mar · PMID 22715638
OBJECTIVE: Many developing nations of the world have experienced an increase in the incidence and prevalence of oral diseases in the last few decades. This study assessed the knowledge and attitude as well as the experie...
OBJECTIVE: Many developing nations of the world have experienced an increase in the incidence and prevalence of oral diseases in the last few decades. This study assessed the knowledge and attitude as well as the experience of personal and professional oral care of secondary school students in Ibadan, in order to understand how to promote a better oral health habit amongst them. PATIENTS AND METHODS: Questionnaires including items relating to knowledge, attitude as well as personal and professional oral care were administered to the subjects. RESULTS: A total of 267 students from Ibadan North Local government area of Ibadan, Oyo state participated in the study. Of these 71.5% clean their mouth twice daily, only 4.1% of the students have used dental floss at least once before. 55.5% of them have been to the dentist before. Only 16.2% of those that have been to the dentist before went for a check. 6.7% of the students know that dental floss is an interdental cleaning device. About 75 % of the students believe that routine dental check-up helps in maintaining a good oral health while about 22 % were of the opinion that it is not necessary or that it is burdensome. CONCLUSION: In conclusion, there is the need for oral health education and promotion that links healthy behaviours and habits to the general well being of individuals because as seen from this study, knowledge is not enough to motivate individuals to adopt a healthy behaviour.
[A comparative study of the transverse dimensions of the dental arches between Class I dental occlusion and Class II1 and Class II2 malocclusions].
Halimi A, Azeroual MF, Abouqal R … +1 more , Zaoui F
Odontostomatol Trop · 2011 Dec · PMID 22457992
The purpose of this work was to compare transverse dimensions of the maxillary and mandibular arches in the canine and molar region between three groups of patients: the first group had an occlusion in class II division...
The purpose of this work was to compare transverse dimensions of the maxillary and mandibular arches in the canine and molar region between three groups of patients: the first group had an occlusion in class II division 1, the second one a dental class II division 2 and the third one, a class I bite. Our sample is composed of 94 patients, with an average age of 20 +/- 3 years: 31 patients presented a class I occlusion, 33 a class III1 and 30 cases presented a dental class II2. For this study, we measured, on the maxillary and mandibular dental casts of each patient, the intercanine and intermolar canine (central inter fossa). Comparison of variables was conducted using the variance analysis ANOVA; the selected post-hoc test is the Bonferrroni test. On the basis of our study, we can get the following results: Maxillary intercanine distance is narrower in class II1 compared to class II2 of 2 mm "p < 0.05". Mandibular intercanine distance is narrower in class III1 compared to class II2 of 1, 3 mm "p < 0.05". Maxillary intermolar distance (inter fossa) is narrower in class II1 compared to class I of 2, 2 mm "p < 0.05".
Traditional and emerging oral health practices in parts of Nigeria.
Oke GA, Bankole OO, Denloye OO … +2 more , Danfillo IS, Enwonwu CO
Odontostomatol Trop · 2011 Dec · PMID 22457991
OBJECTIVE: The purpose of this study was to document the beliefs and perceptions and emerging oral health care practices in parts of Nigeria. METHODS: A descriptive study, based in four different locations that were sele...
OBJECTIVE: The purpose of this study was to document the beliefs and perceptions and emerging oral health care practices in parts of Nigeria. METHODS: A descriptive study, based in four different locations that were selected to reflect urban-rural and geographical spread, was conducted. Focus group discussions and in-depth interviews were conducted among representative groups and significant gatekeepers in the study areas. The discussions focused on oral health problems frequently encountered in the communities, their dietary and snacking habits as well as the dental remedies commonly employed by the people for prophylactic and therapeutic purposes. RESULTS: It was revealed that in both rural and urban low- to- middle socio-economic classes, periodontitis was the commonest dental problem in adults, while dental caries in children appeared to be also a cause for concern especially in northern Nigeria and the urban south. Most adults ate the local staple carbohydrate diets, however large quantities of cariogenic snacks were reported to be consumed. Chewing sticks and locally prepared toothpastes ranked prominent among the tooth cleaning implements, but many in the cities used toothbrushes. Various dental care remedies were employed ranging from warm saline wash to herbal preparations, antibiotics and battery water. In communities studied, the belief in ill defined "worms" as causative agents of all oral health problems was very firm. Consultation with traditional oral healthcare practitioners was a practice commonly observed in all study sites. CONCLUSION: This study has highlighted specific areas for intervention in disease prevention and oral health promotion in Nigeria.
[The effect of autoclave sterilization on the surface properties of orthodontic brackets after fitting in the mouth].
Rerhrhaye W, Ouaki B, Zaoui F … +1 more , Aalloula E
Odontostomatol Trop · 2011 Dec · PMID 22457990
Repeated sterilizations of the orthodontic bands, after fitting in mouth, are likely to involve modifications of their surface properties. Through this study we have tried to observe the effect of sterilization by autocl...
Repeated sterilizations of the orthodontic bands, after fitting in mouth, are likely to involve modifications of their surface properties. Through this study we have tried to observe the effect of sterilization by autoclave on the surface of the orthodontic bands, as well as the contribution of the use of ultrasound in the chain of sterilization. The sample was composed of 30 orthodontic bands divided into 5 groups: a group of new bands (witnesses) and 4 groups having undergone respectively 1 cycle, 3 cycles, 5 cycles and 7 cycles of autoclave sterilization according to the World Health Organization recommendations. For half of each group bands, ultrasonic cleaning has not been provided. The scanning electron microscopy with the elementary microanalysis by X-rays was used for the investigation of surface. At the exam, new bands showed surface irregularities probably due to manufacturing procedures. And the bands, without ultrasonic cleaning, showed the presence of contamination and discolourations. Moreover, there were no modifications on the surface of the bands cleaned by ultrasounds before sterilization. The presence of surface irregularities associated with deposits observed on the bands surface, may be the site of bio corrosion by contributing bio film accumulation. The stay duration of the orthodontic bands in mouth, during orthodontic treatment, is important. So the effect of sterilization on the surface of the orthodontic bands must encourage other scientific research to determine the long term effects of sterilization which remains an essential process in our daily practice.
[Fluoride levels in commercial dentifrices and drinking water in Algeria].
Merghache D, Bellout B, Merghache S … +1 more , Boucherit-Atmani Z
Odontostomatol Trop · 2011 Dec · PMID 22457989
More and more scientific evidence show that fluorides have a cariostatic action to the plaque-saliva-tooth interface during cariogenous dissolution. Fluorides slow down demineralization and enhance remineralization. Thei...
More and more scientific evidence show that fluorides have a cariostatic action to the plaque-saliva-tooth interface during cariogenous dissolution. Fluorides slow down demineralization and enhance remineralization. Their action is optimal, in the oral environment, when used at low concentrations on a continuous basis. The use of the fluorinated toothpastes during brushing of the teeth is a simple, rational method of daily topics application of fluorine, largely used in the context of prevention of dental caries and which can even be regarded as a public health measure. The water ingestion fluorinated represents itself an excellent average of the local application of fluorine. Our work concerned a quantitative study of fluorine in toothpaste and drinking water, and comparative between the local product and the imported one for the toothpastes, and the mineral water and public supply. The standard method of fluorine based on the potentiometry and distillation has shown that 50% of the tested toothpastes contain adequate concentration so that a product of dental care fights against decay. The Tlemcen tap water contains acceptable fluorine content, but the mineral water, with an excessive contribution, can cause fluorose. Of this, we can deduce that a topical application of a suitable quantity of fluorine on a daily basis in accordance with the precautions is not only the prevention of dental caries, but also to stabilize it if it already exists.
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