Restorative Dentistry
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Item Burden of Undergraduate Dental Training in Nigeria(2014) Abiodun-Solanke, I.F.; Ajayi, D.M.; Dosumu,O.O.Background: Training of dental students at all levels has been found to be far more expensive than what is required to train their medical counterparts. The extra cost is expected to be provided by the prospective students of which they are usually unaware of at the point of admission. Objectives: This study was designed to assess the sociodemographic status of dental students in Nigerian Universities as well as factors affecting the amount a dental student spent buying required instruments and other materials needed for their clinical training. Methods: A self-administered questionnaire which was a modified version of that used in Canada and United State to investigate students financial issues was used in this study. The modified structured questionnaire was sent to . the clinical (400-600levels) students in the oldest and well established dental schools in Nigeria. Results: The age range of participants was 19 to 36 years with a mean age of 25±2.7years; 57.3% were males, while 42.7% were females. More than a third (38.2%) of the respondents fathers were in the high class, while 42.2% of the respondents mothers belonged to the middle class. About forty five percent of the total respondents admitted to have spent greater than N30.000 buying their hand instruments out of whom 61.3% belonged to the middle socioeconomic class. The relationship between the amount spent in -purchasing instruments and the socioeconomic status was statistically significant (p=0.001). About half of the respondents admitted they had no idea of extra cost required for their clinical training. Conclusion: The financial burden for undergraduate dental training in Nigeria include tuition, costs of expensive dental textbooks, instruments and other consumables which many students were not aware of by the time they entered the program.Item Randomized clinical study comparing metallic and glass fiber post in restoration of endodontically treated teeth(2014) Gbadebo, O.S.; Ajayi,D.M.; Dosumu,O.O.; Shaba, P.O.Background: Post-retained crowns are indicated for endodontically treated teeth (ETT) with severely damaged coronal tissue. Metallic custom and prefabricated posts have been used over the years, however, due to unacceptable color, extreme rigidity and corrosion, fiber posts, which are flexible, aesthetically pleasing and have modulus of elasticity comparable with dentin were introduced. Aim: To compare clinical performance of metallic and glass fiber posts in restoration of ETT. Materials and Methods: 40 ETT requiring post retained restorations were included. These teeth were randomly allocated into 2 groups. Twenty teeth were restored using a glass fiber-reinforced post (FRP) and 20 others received stainless steel parapost (PP), each in combination with composite core buildups. Patients were observed at 1 and 6 months after post placement and cementation of porcelain fused to metal (PFM) crown. Marginal gap consideration, post retention, post fracture, root fracture, crown fracture, crown documentation and loss of restoration were part of the data recorded. All teeth were assessed clinically and radio-graphically. Fisher’s exact test was used for categorical values while log-rank test was used for descriptive statistical analysis. Results: One tooth in the PP group failed, secondary to documentation of the PFM crown giving a 2.5% overall failure while none in the FRP group failed. The survival rate of FRP was thus 100% while it was 97.5% in the PP group. This however was not statistically significant (log-rank test, P = 0.32). Conclusion: Glass FRPs performed better than the metallic post based on short-term clinical performance.Item Coronal tissue loss in endodontically treated teeth(2012) Sulaiman,A.O.; Shaba,O.P.; Dosumu,O.O.; Ajayi, D.MAim: To categorize the endodontically treated teeth according to the extent of coronal tissue loss in order to determine the appropriate restoration required. Material and methods: A two year descriptive study was done at the Conservative Clinic of the Department of Restorative Dentistry, Dental Centre, University College Hospital, Ibadan. Successful endodontically treated teeth were assessed and categorized according to the extent of tissue loss based on standard criteria proposed by Smith and Schuman. Results: Two hundred and ninety endodontically treated teeth were assessed for success both clinically and radiographically. Eighty (27.6%) were anterior teeth, 78 (26.9%) were premolars while 132 (45.5%) were molars. Dental caries was found to be the most common (61.4%) indication for endodontic treatment and caused more coronal tissue damage (moderate and significant) when compared with other indications for endodontic treatment. Two hundred and twenty seven (78.3%) endodontically treated teeth had moderate coronal tissue loss, 41 (14.1%) had minimal damage while 22 (7.6%) had significant tissue damage. Dental caries was the most common indication for endodontic treatment of the posterior teeth while trauma was the most common indication for the anterior teeth. Conclusion: Majority of the endodontically treated teeth that were evaluated for tissue loss had moderate coronal tissue damage. It is therefore recommended that proper and prompt evaluation of the remaining coronal tooth tissue following successful endodontic treatment be carried out in order to determine the appropriate definitive restoration required that will be easy for the clinician and lessItem The Prevalence and Severity of Dental Fluorosis among Secondary School Children in Ibadan, Nigeria.(2012) Ajayi, D.M.; Arigbede,A.O.; Dosumu,O.O.; Ufomata D.Objectives: This study was conducted to determine the prevalence and severity of dental fluorosis among secondary school children in Ibadan, Nigeria. Materials and methods: A multi-stage sampling technique was employed to select the participants who consisted of children aged 12-14 years taken from eleven randomly selected secondary schools in the five local government areas of Ibadan Metropolis. The children were examined by the Principal Investigator after submitting parental administered questionnaires. The diagnosis of dental fluorosis was based on the TF index. Results: The mean age of the 1372 participants (825 males and 547 females) was 13.15 + 0.80 years. Dental fluorosis was diagnosed in 157 (11.4%) children (98 males and 59 females). There was no statistically significant difference between age or gender and the occurrence of fluorosis. Most of the cases were very mild with greater than 90% of the affected teeth having a TF score of <3. The most severely affected were the maxillary molars. Severe disfiguring cases of dental fluorosis were not common among the secondary school children examined. Conclusion: The prevalence of dental fluorosis was found to be low, with majority of the cases being very mild.