Odonto-stomatologie Tropicale = Tropical Dental Journal[JOURNAL]
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200 papers
[Resistance to B-lactamines of bacteria responsible for endodontic root canal infections].
Rochd T, Calas P, Jabri M … +1 more , Roques C
Odontostomatol Trop · 2010 Dec · PMID 21510355
Samples were taken under strictly anaerobic conditions from the root canals of 22 patients having a tooth in which necrotic pulp was associated with an inflammatory peri-apical lesion an optical periodontitis. In the maj...
Samples were taken under strictly anaerobic conditions from the root canals of 22 patients having a tooth in which necrotic pulp was associated with an inflammatory peri-apical lesion an optical periodontitis. In the majority of cases (85%), these lesions were chronic and the pulp chamber was closed. One hundred and two strains were isolated, 71.7% of the bacteria being obligate anaerobes and 49.8% being Gram-negative bacilli. Their ability to produce beta-lactamases was tested and 8.8% gave a positive reaction in a cefinase test. These cefinase positive strains were nevertheless susceptible to 3rd-generation cephalosporins (cefoxitin) and to amoxicillin-clavulanate, with the exception of M. Morganii.
[Diagnostic and therapeutic aspects of parotid tumors in the Maxillofacial Surgery Department of the University Hospital Center in Treichville, Abidjan].
Konan KE, N'Guessan ND, Anzouan KE … +3 more , Assouan C, Edouma BG, Assa A
Odontostomatol Trop · 2010 Dec · PMID 21510354
INTRODUCTION: Taking charge of parotid tumors in an African setting is difficult because of the weakness of the technical, delayed consultation, treatment of traditional healers, tumor volume, secondary infection and ulc...
INTRODUCTION: Taking charge of parotid tumors in an African setting is difficult because of the weakness of the technical, delayed consultation, treatment of traditional healers, tumor volume, secondary infection and ulceration of some of them. OBJECTIVE: Identify the epidemiological, clinical, evolutive and therapeutic in order to propose an adapted scheme to the management of these tumors in our African conditions. MATERIALS AND METHODS: This is a retrospective study of 38 patients with parotid tumors operated and hospitalized in the department of stomatology and maxillofacial surgery university hospital of Treichville (Abidjan), during the period from January 2005 to December 2009 included, so a period of 5 years. RESULTS: The study involved 21 (55.3%) men for 17 (44.7%) women aged between 8 and 75 years came to 76.31% for parotid tumor. In 55.26% patients consulted between 1 and 5 years. Clinically: general condition was preserved in 91.1%, tumor size ranged between 5 and 10 cm in 60.53%, they were in the form of nodules in 78.9%, were covered with healthy skin in 78.95%, appeared as isolated tumor in 72.06%. Ultrasound examination was the most paraclinical exam used (65.79%). The tumors were benign in 76.3% dominated by pleomorphic adenoma (63.2%). The most common malignant tumor was muco epidermoid carcinoma (7.9%). Exo-facial parotidectomy was the most common technique used (60.52%). The rate of patient follow-up at 2 years was 5.26%. CONCLUSION: Social and cultural conditions of the management of tumors and lack of technical platform lead us to propose the total parotidectomy for a better cure rate of patients.
[Dental caries in the carceral middle of Dakar].
Diouf M, Lo CM, Cisse D … +4 more , Faye D, Faye B, Leye Benoist F, Niang CM
Odontostomatol Trop · 2010 Dec · PMID 21510353
Oral diseases, mainly tooth decay and periodontal disease, are among the most common conditions in the world. The tooth decay is very prevalent in developing countries and particularly in disadvantaged backgrounds where...
Oral diseases, mainly tooth decay and periodontal disease, are among the most common conditions in the world. The tooth decay is very prevalent in developing countries and particularly in disadvantaged backgrounds where insecurity and its corollaries prevail. Thus, our study focused on one of these places: the prisons, characterized by deprivation of liberty, monotony, boredom, and the difficult conditions of detention, brief by a total dependence of the detainee. The aim of this study was to determine the DMFT (Decayed, Missing, Filled Teeth) in detainees dwelling in prisons in Dakar. This cross sectional study included 754 detainees aged 18 years and more with a stay exceeding more than a year, in one of the four main prisons of the capital city, Dakar. The majority of detainees was males (90%), aged between 18 and 35 years (63%) and was staying at "Camp penal" (65%). The proportion of inmates with at least one tooth cavity was 81.3%, those with teeth sealed was 26.1% and the prisoners with missing teeth reached 70.6%. The highest average DMFT was noted at "Camp penal" (7.3) among men (6.5) and among inmates aged 36 to 45 years (6.1) with a significant difference. The tooth decay is particularly worrying in the prison population, hence the urgency to establish a programme of prevention and care of oral diseases in this environment.
Reasons for exodontia in rural Nigerian children.
Odai CD, Azodo CC, Ezeja EB … +1 more , Obuekwe ON
Odontostomatol Trop · 2010 Dec · PMID 21510148
OBJECTIVE: To investigate the reasons for exodontia in children attending a general dental practice in Uselu, Edo State. MATERIAL AND METHODS: All pediatric patients that had extraction between January 2006 and December...
OBJECTIVE: To investigate the reasons for exodontia in children attending a general dental practice in Uselu, Edo State. MATERIAL AND METHODS: All pediatric patients that had extraction between January 2006 and December 2008 in a general dental practice in Uselu were recruited for this prospective survey. The data collected include age, sex, reason for extraction and tooth extracted. RESULTS: A total of 756 extractions were done during the survey period. Female constituted 57.4% of treated patients. Caries was the most frequently reason for childhood exodontia (82%). The deciduous teeth were mostly extracted (66.1%) than permanent teeth (33.9%). Deciduous molar accounted for 42.6% of all exodontia in children. Mandibular teeth were more frequently extracted (60%) than maxillary teeth (40%). Exodontia was also more on the right side of the mouth and lower right quadrant CONCLUSION: This survey highlights the need for extensive prevention programs targeted at rural children with high caries risk.
[Open bite and and therapeutic strategy].
Halimi A, Zaoui F
Odontostomatol Trop · 2010 Sep · PMID 21328927
Anterior open bites can be divided into two categories: skeletal and dento-alveolar. The etiology, basically affecting dento-alveolar structures, is functional or mechanical such as the rotation of the first higher molar...
Anterior open bites can be divided into two categories: skeletal and dento-alveolar. The etiology, basically affecting dento-alveolar structures, is functional or mechanical such as the rotation of the first higher molars, the exaggerated curve of Spee and the incisor supraclusion and the simple orthodontic treatment can bring a therapeutic success but functional rehabilitation remains the guaranty of such a stability of our treatment. The purpose of this work is to make a teaching article which puts the point on the interest of the elements of the diagnosis and the orthodontic treatment indicated in certain clinical situations of anterior open-bite; this by detailing biomechanics of correction of this anomaly requiring various therapeutic strategies. Functional rehabilitation remains always the guaranty of such a therapeutic stability. For the teaching aspect, we want to attach stereotypic forms and also to present clinical cases treated in the service of consultation and dental treatment in order to answer such a request.
[Cephalometric features of patients referred for orthodontic treatment at the Dentistry Department of Dakar University].
Diouf JS, Badiane A, Ngom PI … +3 more , Niagha G, Diop-Bâ K, Diagne F
Odontostomatol Trop · 2010 Sep · PMID 21328926
INTRODUCTION: Each ethnic group has its own characteristics. The aim of this study was to determine the morphological characteristics of a Senegalese population. MATERIALS AND METHODS: Sixty two lateral cephalograms of S...
INTRODUCTION: Each ethnic group has its own characteristics. The aim of this study was to determine the morphological characteristics of a Senegalese population. MATERIALS AND METHODS: Sixty two lateral cephalograms of Senegalese patients were assessed in a cross sectional study. All lateral cephalometric films were traced on a transparent cellulose acetate sheet by the same operator. Conventional cephalomebic analysis was performed with 17 measurements (6 linear and 11 angular) t test was used to assess differences in age and cephalometric variable between subjects grouped according to sex (male and female). A P value of < or = 0.05 was considered statistically significant. RESULTS: No statistically significant differences were found between Senegalese men and women. This study shows an increase in the maxillary protrusion and a decrease in the mandibular protrusion with his corollary of skeletal class II. The mean of the vertical dimension measurements suggest a hyperdivergence. Protrusive lips were associated with incisors protrusion. CONCLUSION: These results which show morphological differences between Senegalese subjects and other populations consolidate the idea that the racial and ethnic characteristics must be taken into account during orthodontic diagnosis and treatment planning.
[Correlation between the position of the 1st molars and the 3-dimensional trajectory of anterior guidance].
Santoni P, Ruquet M, Tardivo D … +2 more , Bezzina S, Monnet-Corti V
Odontostomatol Trop · 2010 Sep · PMID 21328925
This study tries to demonstrate that there is a correlation between the anterior trajectories of the mandible, in the anterior-posterior and lateral directions, and the occlusal morphology of the first permanent molars....
This study tries to demonstrate that there is a correlation between the anterior trajectories of the mandible, in the anterior-posterior and lateral directions, and the occlusal morphology of the first permanent molars. The clinical consequences are interesting for prosthetic treatments, in the rehabilitation of anterior and canine guidance, and for orthodontic treatments.
[Preferred zones of accumulation of prosthetic microbial plaque on removable complete dentures].
Merdes L, Soueidan A, Le Bars P … +1 more , Tabbi-Aneni N
Odontostomatol Trop · 2010 Sep · PMID 21328924
INTRODUCTION: Denture plaque (DP) is not visible with naked eye when it is not mineralized or not fully fixed. Describing and studying its qualitative and quantitative aspects in Complete Dentures (CD) require precisely-...
INTRODUCTION: Denture plaque (DP) is not visible with naked eye when it is not mineralized or not fully fixed. Describing and studying its qualitative and quantitative aspects in Complete Dentures (CD) require precisely-located sampling but selection criteria have not yet been well defined. In order to improve our treatment and preventive strategies for patients with CD, it is necessary to explore the various DP accumulation zones on CD fitting surfaces. PURPOSE: The aim of this study is to assess the DP accumulation on fitting surfaces of CD. MATERIAL AND METHODS: Distribution of DP accumulation zones was assessed by naked eye observation of the fitting surfaces on 31 maxillary and 31 mandibular CD. The prostheses were to be carried regularly since at least one year. The data were collected at the Prosthodontics department of the Annaba University Medical Center in Algeria. Prostheses were immersed for 24 hours in a plaque disclosing solution containing erythrosin 2% (Dento-Plaque Inava). The maxillary fitting surface was divided into five sectors: the post damming zone (1MaxFS), the top of the palate zone (2MaxFS), the incisor zone (3MaxFS), the maxillary tuberosity zone (4MaxFS), and the end of the canine and 1st premolar zone (5MaxFS). For mandibular fitting surfaces: trigonal and retromolar zone (1ManFS), canine and 1st premolar zone (2ManFS), and incisor zone (3ManFS). RESULTS: DP distribution was found to be homogeneous on the fitting surface of mandibular CD, however it was distributed in unequal way on the maxillary fitting surfaces. We noted a highly significant difference (p < 0.001) in the staining frequencies of the targeted zones. The most colored zone was the post damming one (1MaxFS), with a rate of 96.7%, whereas the least colored zone was the top of palate one (2MaxFS), with 35.5%. On the mandibular fitting surfaces, the rate of staining was 93.5% for the trigonal and retromolar zone (1ManFS) versus 83.8% on canine, 1st premolar (2ManFS) and incisor (3ManFS) zones. There was no significant difference (p = 0.422). CONCLUSION: The accumulation of DP was found to be homogeneous on mandibular fitting surfaces and no homogeneous on maxillary fitting surfaces. These results require further investigations in order to understand the causes of this difference. This will allow us to improve our treatment and preventive strategies for edentulous patients.
[Diagnostic and surgical approach to an hourglass-shaped nasopalatine glioma in an infant].
Konan KE, Diabate AS, N'Guessan ND … +5 more , Anzouan KE, Yapi-Yapo CP, Assouan C, Assa A, Ouattara DN
Odontostomatol Trop · 2010 Sep · PMID 21328923
The authors report a case of glioma nasopalatine Multifoil in wallet, location-intra nasal and palatal left. The nasal glioma is a rare congenital malformation presenting as a nasal mass composed of neuroglial tissue het...
The authors report a case of glioma nasopalatine Multifoil in wallet, location-intra nasal and palatal left. The nasal glioma is a rare congenital malformation presenting as a nasal mass composed of neuroglial tissue heteropias resulting from an abnormality in embryonic development. It is a benign tumor that fits into the nosology of the masses of the midline. This abnormality arises primarily a diagnostic problem because often mistaken for a meningo-encephalocele or a nasal dermoid cyst. Localization nose and palate, an hourglass, is extremely rare if not exceptional; The computed tomography (CT) has enabled the accurate assessment of injury and has guided the choice of surgical technique. The resection was done successfully without recurrence. Histology examination of the surgical specimen confirmed the nature of astrocytic neuroglial tumor. The location of the tumor pedide palate to that of the left nostril is special and especially histological diagnosis of this congenital malformation.
[Immunological aspects of a case of extragenital endometriosis localized in the mouth].
Akre DP, Konan KE, Seka SJ … +3 more , Dasse SR, Koffi KA, Abauleth R
Odontostomatol Trop · 2010 Jun · PMID 21189652
To appreciate the role of the immune system in transportation and development of endometer cells in mouth, authors reported the results of immunological parameters analysis in one patient suffering to a mouth localisatio...
To appreciate the role of the immune system in transportation and development of endometer cells in mouth, authors reported the results of immunological parameters analysis in one patient suffering to a mouth localisation healed endometriosis out of hormonal therapy in experimental and analytic study. Immunoglobulin A, G, M and C3, C4 complement fractions were measured by Mancini radial immunodiffusion. The count of CD4+, CD8+and B Cell was performed by BD FASCalibur flow cytometer. Autoimmune diseases were searched after by measuring autoantibodies using agglutination and immunofluoresence methods. The results showed any antibodies detected and the count of CD4, CD8 and B cells was normal. However, IgG and IgA increased. But C3, C4 factions and IgM decreased. This seems an immunological disorder which could be more explored in NK cells and cytokines study.
A review of orthodontic bond failure using a chemical cure adhesive.
Moninuola AE, Costa OO, Isiekwe MC
Odontostomatol Trop · 2010 Jun · PMID 21188920
INTRODUCTION: Orthodontic treatment involves the direct bonding of brackets to the tooth surface. These bonds should survive until the end of active treatment. The objective of this study was to clinically determine the...
INTRODUCTION: Orthodontic treatment involves the direct bonding of brackets to the tooth surface. These bonds should survive until the end of active treatment. The objective of this study was to clinically determine the frequency and bond failure pattern at the orthodontic clinic in the Lagos University Teaching Hospital, (LUTH) within a two-year period. MATERIALS AND METHODS: A total of 1926 stainless steel Roth .022 brackets (Ultraminitrim Dentaurum, Germany) in 113 patients were bonded using Rely-a-bond No-mix Adhesive (Reliance Orthodontic Products Inc., U.S.A.) over a two-year period. The effects of age, gender, arch location and position of the tooth in the arch on failure rate were evaluated. The mean time to first bond failure was also determined. RESULTS: A failure rate of 24.1% was recorded. The mean age at onset of treatment was 18.08 years. There was female preponderance with a male to female ratio of 1:3. The failure rate in males was 26.2% and in females 23.4%. The failure rates among the different age groups are as follows; 6-11 years 30.7%, 12-17 years 36.2%, 18-25 years 10.2%, 26 and above years 9.1%. The failure rate was significantly higher in the mandibular teeth and teeth in the posterior location of the arch. CONCLUSION: Out of 1926 bonded brackets there was a failure rate of 24.1% with a higher rate of failure in the younger age group, mandibular teeth and teeth in the posterior location of the arch.
Do active ingredients in non alcoholic chlorhexidine mouth wash provide added effectiveness? Observations from a randomized controlled trial.
Santhosh K, Surbhi L, Harish T … +4 more , Jyothi T, Arvind T, Prabu D, Suhas K
Odontostomatol Trop · 2010 Jun · PMID 21188919
BACKGROUND AND OBJECTIVE: Chlorhexidine (CHX) is the most tested and leading oral antiseptic agent. Zinc as an active ingredient has shown additive and synergistic effect and when Sodium fluoride (NaF) was used it failed...
BACKGROUND AND OBJECTIVE: Chlorhexidine (CHX) is the most tested and leading oral antiseptic agent. Zinc as an active ingredient has shown additive and synergistic effect and when Sodium fluoride (NaF) was used it failed to show added effectiveness and the combined effect of NaF and Zinc chloride (ZnCl2) both as active ingredients has never been evaluated. The present study assessed the effectiveness of active ingredients and to compare the frequency of adverse events occurring with traditional CHX and CHX+NaF+ZnCl2. MATERIAL AND METHODS: A randomized double blind crossover trial was executed with 24 subjects participating in two consecutive experimental phases of 21 days each with CHX and CHX+NaF+ZnCl2 mouth rinses. Each individual was assessed for gingivitis, plaque, supragingival calculus and extrinsic stains at baseline and after experimental phase and adverse events experienced were recorded. RESULTS: There was a significant difference (p = 0.014) between the two experimental mouth rinses for their effectiveness on gingivitis. In the CHX group, the gingival score on D21 was significantly greater by 0.13 than DO while with CHX+NaF+ZnCl2 there was a decrease in gingival score by 0.09 which was insignificant. No significant difference was observed between the interventions for plaque accumulation and formation of extrinsic stains. The difference in the mean calculus score at baseline and after experimental phase was 1.47 for CHX+NaF+ZnCl2 in contrast to 1.93 among CHX group. Oral itching, oral soreness, apthous ulcers and dryness were reported by many subjects while burning sensation was reported by very few volunteers. There was no significant difference for occurrence of adverse events between the two experimental mouthrinses. CONCLUSIONS: CHX+NaF+ZnCl2 mouth rinse was found to be significantly more effective in the reduction of gingivitis and supragingival calculus. No significant difference was found for the occurrence of dental plaque, extrinsic stains and adverse events between the interventions.
The sensitivity, specificity and accuracy of fine needle aspirational cytology in the diagnosis of oro-facial neoplasms at Lagos University Teaching Hospital, Nigeria.
Omitola OG, Ajayi OF, Banjo AA … +2 more , Anunobi CC, Arotiba GT
Odontostomatol Trop · 2010 Jun · PMID 21188918
OBJECTIVE: The aim of the study is to compare the efficacy of fine needle aspirational cytology (FNAC) with open surgical biopsy in the diagnosis of orofacial tumours in patients seen at the Dental Centre of Lagos Univer...
OBJECTIVE: The aim of the study is to compare the efficacy of fine needle aspirational cytology (FNAC) with open surgical biopsy in the diagnosis of orofacial tumours in patients seen at the Dental Centre of Lagos University Teaching Hospital from May 2005-May 2006. PATIENTS AND METHODS: Fine needle aspiration was performed on all patients scheduled for open surgical biopsy at the Oral and Maxillofacial clinic of the hospital before the open surgical biopsy was done. Forty six patients whose final histological diagnoses were oro-facial neoplasms were involved in this study. Sensitivity, specificity and accuracy for fine needle aspirational cytology were calculated. RESULTS: The sensitivity, specificity and accuracy of fine needle aspirational cytology in the diagnosis of oro-facial tumours were 95%, 95.8% and 95.5%, respectively. The false positive and false negative rates were 5% and 4.2%, respectively. CONCLUSION: The high sensitivity, specificity and accuracy of fine needle aspirational cytology reported in this preliminary study suggest that the test may have a place in the management of oro-facial tumours. However, when the result of fine needle aspirational cytology is not in agreement with the clinical diagnosis, especially in suspected malignancy, open surgical biopsy should be performed.
Fluoride contents of some Nigerian dentifrices.
Ndiokwelu E, Zohoori V
Odontostomatol Trop · 2010 Jun · PMID 21188917
OBJECTIVES: To analyze the fluoride content of different brands of toothpastes and powders commercially available in Nigerian markets, to compare the claims of the manufacturers with the objectively obtained results of t...
OBJECTIVES: To analyze the fluoride content of different brands of toothpastes and powders commercially available in Nigerian markets, to compare the claims of the manufacturers with the objectively obtained results of the analysis and to make recommendations to the Regulatory Agencies based on the results of analysis. METHOD: Standard Operating Procedures (SOP) were used to measure the concentration of fluoride in randomly selected samples using fluoride ion selective electrode. RESULTS: Of the twelve samples analyzed, two toothpastes were purchased at Newcastle. Ten samples (eight toothpastes and two powders) were brought over from Nigeria. Three of the twelve were found to be deficient in the quantity of fluoride contained. All the deficient three samples found wanting were from Nigeria--a thirty per cent (30%) of the Nigerian samples. CONCLUSION: The importance of fluoride in caries prevention has been well documented and appreciated as public health measure. All efforts geared towards making fluoride available to the public especially through the dentifrices should be encouraged and guarded against mercantilism and abuse. To this end, the Nigerian Dental Association and the National Agency for Food and Drug Administration and Control (NAFDAC) should increase their surveillance over the quality of the products marketed.
Caries experience and oral hygiene status of cerebral palsy children in Riyadh.
Alhammad NS, Wyne AH
Odontostomatol Trop · 2010 Jun · PMID 21188916
The purpose of this study was to determine the caries experience and oral hygiene (OH) status of cerebral palsy (CP) children in Riyadh area. One hundred and forty CP children [82 (58.6%) males & 58 (41.4%) females] were...
The purpose of this study was to determine the caries experience and oral hygiene (OH) status of cerebral palsy (CP) children in Riyadh area. One hundred and forty CP children [82 (58.6%) males & 58 (41.4%) females] were examined for dental caries and OH status in dental clinic of the Disabled Children's Association Center, Riyadh. The children were divided into three age groups; first group 3-6 years old (41 children), second group 7-9 years old (52 children) and third group 10-12 years old (47 children). The mean DMFS (decayed, missing and filled surfaces) score for the first group was 18.8 (+/- 16.3), with the DS component of 10.9 (+/- 7.5), MS component of 3.7 (+/- 10.4) and FS component of 4.1 (+/- 8.9). For the second group the mean DMFS was 23.4 (+/- 17.7) with DS component of 15.4 (+/-12.1), MS component of 4.1 (+/-9.0) and FS component of 3.8 (+/- 8.5). The corresponding values for the third group were 20.5 (+/- 14.0), 12.4 (+/- 9.7), 5.1 (+/- 12.4) and 2.9 (+/- 5.5) respectively. There was no statistically significant difference (p > 0.05) in caries experience between the three age groups. Very few (5.7%) CP children were rated as having good OH. There was a strong association between poor oral hygiene status and high DMFS score. It can be concluded that the caries experience of CP children in Riyadh is very high, and that very few of these children have good oral hygiene.
Major public health problems in developing countries.
Ngom PI
Odontostomatol Trop · 2010 Jun · PMID 21188915
Abstract loading — click title to view on PubMed.
[Oral benefits for the elderly: results of a one-year implementation of the "Sesame" plan in Senegal].
Cisse D, Lo CM, Faye D … +3 more , Diouf M, Kanoute A, Kane AW
Odontostomatol Trop · 2010 Mar · PMID 20839478
Among the 650,000 persons aged 60 and over in Senegal, only 30% were receiving social security coverage, divided between the Senegalese Retirement Providence Institute and the National Retirement Fund. To fill the social...
Among the 650,000 persons aged 60 and over in Senegal, only 30% were receiving social security coverage, divided between the Senegalese Retirement Providence Institute and the National Retirement Fund. To fill the social demand, the government has put in place since 1 September 2006 a plan called "Sesame" which gives people aged 60 and older, free access to certain health services provided in public health. The implementation of this plan creates a lot of comments in the health community. The objectives of this study were to describe the dental benefits offered and to identify the difficulties perceived and experienced by the service provider after one year the "sesame" plan was implemented in Ouakam Health Center dental office, benchmark place of Gerontology in the Dakar North health district in Senegal. The study included two components: quantitative and qualitative terms, respectively, consisting of a retrospective study from sheets review and an interview with the health center service provider. The beneficiaries were a total of 42, mean age 68 years, including 66.7% men. Just over a third (35.7%) resided outside Ouakam. Almost 4/5 of the beneficiaries have suffered dental extractions on 1 to 10 teeth per beneficiary. The proportions of people receiving dentine treatment and curetage were respectively 4.8% and 2.4%. Qualitative data showed that the implementation of the plan was not shared between providers and beneficiaries. The "Sesame" plan is a commendable initiative to encourage and improve.
Antibacterial efficiency of passive ultrasonic versus sonic irrigation. Ultrasonic root canal irrigation.
Tardivo D, Pommel L, La Scola B … +2 more , About I, Camps J
Odontostomatol Trop · 2010 Mar · PMID 20839477
OBJECTIVES: To compare the antibacterial effect of the passive ultrasonic to passive sonic irrigation with a 5.25% NaOCI solution. METHODS: Sixty human teeth were used. The crowns were removed and the roots were instrume...
OBJECTIVES: To compare the antibacterial effect of the passive ultrasonic to passive sonic irrigation with a 5.25% NaOCI solution. METHODS: Sixty human teeth were used. The crowns were removed and the roots were instrumented prior to sterilization and incubation with Enterococcus faecalis. Five mL of 5.25% NaOCI were used during a 3 min final rinsing with: syringe irrigation (n = 20), passive ultrasonic irrigation with the Irrisafe (n = 20) and passive sonic irrigation with the Endo Activator (n = 20). A sterile file was used to remove dentine shavings at the apex and placed in BHI. After 72 h, this infusion was used to inoculate blood agar plates. The presence or absence of Enterococcus faecalis colonies was determined and statistically analyzed. RESULTS: No statistically significant difference was found among the 3 groups. None of the irrigation regimen permitted to obtain 100% of bacteria free teeth. CONCLUSION: The passive agitation of the irrigation solution did not increase its antibacterial efficiency. Longer irrigation times may be required.
[Effects of electropolishing on rupture resistance in cyclic fatigue and on the surface condition of endodontic instruments].
Sinan AA, Thiémélé-Yacé SE, Abouattier-Mansilla E … +2 more , Vallaeys K, Diemer F
Odontostomatol Trop · 2010 Mar · PMID 20839476
UNLABELLED: The Nickel-titanium (Ni-Ti) instruments superelasticity does not does not allow to anticipate rupture. AIM: This study evaluates the effect of electropolishing time on the rupture resistance in flexion fatigu...
UNLABELLED: The Nickel-titanium (Ni-Ti) instruments superelasticity does not does not allow to anticipate rupture. AIM: This study evaluates the effect of electropolishing time on the rupture resistance in flexion fatigue of the endodontics Ni-Ti instruments. METHODS: 48 HeroShapers 6% 25/100 are divided into 4 groups of surface treatment (without electropolishing, with electropolishing of 70, 80 or 90 seconds). The surface of the instruments is observed under a scanning electron microscope. Each instrument is driving by an inGet control motor at 275 rpm and put on a fatigue bench (stainless steel pipe angled at 60 degrees with r = 10 mm). The number of turn before rupture is recorded by a specific meter. Data were analysed by analysis of variance and a Fischer probable least-square difference test (PLSD) at a significance level of 0.05. RESULTS: The mean number of rotation to failure in each group of instrument decreases (407 to 355 tours) with the increase of the electropolishing time. There were no statistically significant difference (p = 0, 3508) between the different groups. CONCLUSION: Electropolishing from 70 till 90 seconds improves the surface state without modifying the rupture resistance in flexion fatigue of triple helix endodontic instruments with 6% taper.
Characteristic features of impacted denture cases in Nigeria.
Arigbede AO, Dosumu OO
Odontostomatol Trop · 2010 Mar · PMID 20839475
OBJECTIVE: The study was designed to determine the characteristic features of impacted dentures, the patients presenting with them and to determine the pattern of distribution of cases in a cross-section of Nigerian Teac...
OBJECTIVE: The study was designed to determine the characteristic features of impacted dentures, the patients presenting with them and to determine the pattern of distribution of cases in a cross-section of Nigerian Teaching Hospitals. MATERIALS AND METHODS: Self-administered questionnaire was distributed among Ear Nose and Throat (ENT) resident doctors during an update course at University College Hospital (UCH), Ibadan, Oyo State, Nigeria. Demographic variables, number of cases encountered over a 10-year period and characteristics of impacted dentures and those of the victims were requested. RESULT: 62.5% of the respondents indicated that the patients were males in the 30-65 years age bracket and that most of them were not satisfied with their dentures at the time of impaction. All the respondents indicated that the cases involved were partial dentures, most of which were upper acrylic dentures without clasps. The highest self-reported number of denture impaction cases (22) was recorded in Lagos University Teaching Hospital (LUTH). CONCLUSION: The preliminary report shows that cases of denture impaction usually involve upper partial dentures without clasps in dissatisfied male denture wearers within 30-65 years age bracket.
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