FACULTY OF DENTISTRY

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Start date: 2005End date: 2009

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    The unmet treatment need of traumatized anterior teeth in selected secondary school children in Ibadan, Nigeria
    (2009) Deborah Ajayi D.M.; Denloye,O.; Abiodun Solanke, I.F.
    Abstract – Treatment of traumatized anterior teeth is highly desirable to relieve pain, maintain esthetics and to preserve the balance of the anterior part of the mouth; however many may go untreated. The aim of this study was to assess the prevalence of damage to permanent anterior teeth in school adolescents, the average duration of trauma and to ascertain the level of the unmet treatment need. A total of 1532 secondary school children between the ages 12 and 19 years participated in the study. They were randomly selected from public secondary schools in five local government areas in Ibadan using a multistage sampling method. Participants were examined with the aid of mouth mirrors and probes under natural light. Traumatic anterior dental injuries were recorded by the same investigator (DMA) according to WHO classification. One hundred and sixty-five participants sustained injuries to their anterior teeth. Their mean age was 15.47 ± 2.09 years, with a male to female ratio of 1.5:1. The commonest cause was fall (78.8%) with road traffic accident being the least (1.8%). The tooth most commonly injured is the upper left incisor (48.0%) closely followed by upper right central (43.1%). Enamel fracture was seen in 46.5% and enamel–dentine in 42.6% of the traumatized teeth. Most (79.4%) of the children sustained injury to one tooth only. Of the participants, only 30 (18.2%) had previous dental consultation while only nine (5.5%) consulted the dentist following the trauma; however, none of the teeth had any form of restoration. Average time elapsed between trauma and dental examination was about 3.5 years. Many participants had had injury for about 2 years before dental examination. In conclusion, there is a high unmet treatment need of traumatized anterior teeth in the study population.
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    Dental anxiety: investigative and management techniques often employed in a cross section of Nigerian Specialist Dental Clinics
    (2009) Arigbede, A.O.; Ajayi, D.M.; Adeyemi, B.F.
    Background: Information on the pattern of dental anxiety’ management in Nigeria is currendy not available. Aim: The study was designed to determine the awareness and frequency of application of dental anxiety assessment questionnaires as well as the current pattern in the management of dental anxiety’ in Nigeria. Methods: The cross-sectional study was conducted using structured questionnaires distributed among dental residents and house officers in Nigerian dental schools. Information requested included demographic variables, frequency of presentation of dental anxiety’, awareness and frequency of application of dental anxiety' questionnaires. The respondents were also asked to rate the frequency of application of the outlined dental anxiety’ management techniques on a 5-point Likert scale. The median score and the range for each technique was determined and compared between the male and female respondents. Results: A total of 96 questionaires were sent out to dental surgeons of all grades. Response was obtained from 86 giving a response rate of 90%. Only 23 (26.7%) respondents were aware of dental anxiety’ questionnaires while only 13 (15.1%) have seen the instrument applied. The percentage of patients with dental anxiety’ was estimated by the respondents to be <20%. Behaviour therapy was the most frequently employed dental anxiety management technique. The female respondents employ behaviour therapy and intramuscular sedation more frequently. Conclusion: The awareness and frequency of application of dental anxiety’ questionnaires appeared poor. Behaviour therapy was the most frequently employed dental anxiety’ management technique. It appears the female respondents employ behavior therapy and intramuscular sedation more frequently.
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    Prevalence of Additional Canals in Maxillary First Molars in a Nigerian Population
    (2006) Abiodun-Solanke, I.F; Dosumu O.O.; Shaba, P.O.; Ajayi,D.M
    Aim: The aim of this study was to investigate the prevalence of additional canals in maxillary first molars in a selected population in Nigeria. Methods and Materials: One hundred extracted teeth were collected from the Pedodontic and Oral Surgery clinics of the University College Hospital in Ibadan, Nigeria. The teeth were identified and their root planed to remove adherent soft tissues. Each tooth was sectioned at the cementoenamel junction (CEJ) and then again at 2 mm below the CEJ. The number of canals present in each root was noted. For the clinical aspect of the study, 30 patients with clinical and radiological evidence of pulpal involvement participated in the study. These patients had root canal therapy performed on their maxillary first molars and the number of canals was confirmed with periapical radiographs. Results: In the laboratory phase of the study 77% of the teeth sectioned had three canals while 22% had four canals with the fourth canal being a second mesiobuccal canal. Only one tooth had five canals with two canals in the palatal root, two canals in the mesiobuccal root, and the remaining canal in the distobuccal root. For the clinical phase of the study, 29 (96.7%) out of 30 patients treated had three canals while only one (3.3%) had four canals with the fourth canal being a second mesiobuccal canal. Conclusion: Clinicians should assume there are additional canals in each root when performing endodontic therapy on the maxillary first molar. Only after a thorough search for extra canals and after it is determined
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    The fluoride content of drinking water and caries experience in 15 – 19 year old school children in Ibadan, Nigeria
    (2008) Ajayi,D.M.; Denloye O.O; Dosumu O.O.
    Fluoride, a trace element with anticariogenic benefit may either occur naturally or be added to drinking water sources. This study aimed at determining the fluoride level of the different drinking water sources in Ibadan, Oyo State, Nigeria and to relate this with the caries experience of secondary school children in the city. Sixteen samples of the drinking water sources from various locations in the five local government areas of the city were analysed for fluoride concentration. The locations were selected around the vicinities of the secondary schools used for caries study. Nine hundred and fifty five students aged 15-19 years randomly selected from eleven secondary schools in Ibadan metropolis were examined for dental caries over a period of 4-5 months. Only teeth with obvious cavitations were recorded as being carious using the WHO standard method. Teeth grossly covered with calculus and third molars were excluded. No radiograph was taken. The fluoride level of the different water sources was between 0.02 and 0.03ppm. Forty-four (4.6%) of the children had dental caries. There was no statistically significant difference between either DMFT and gender (t = 0.67, p = 0.91) or DMFT and age (F=1.488, p=0.224). However, females had a slightly higher mean DMFT than males and the highest mean DMFT (2.67 + 1.15) was found among the 19- year- old children. Twenty-three (52.3%) of the students with caries had only one carious tooth while only two had four carious teeth each. In conclusion, both the fluoride level and caries prevalence were low.
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    Causes and pattern of fracture of acrylic dentures among patients seen in a Nigerian teaching hospital
    (2007) Ogunrinde,T.J.; Ajayi, D.M.; Dosunmu, O.O
    There is little information on the causes and pattern o f fracture of acrylic dentures in Nigerian patients despite being the most frequently employed design in Nigeria. The aim of this study was to determine the average life span o f acrylic dentures before fracture, the causes and pattern of fracture o f acrylic dentures in a Nigerian population. A ll consecutive patients that presented with fractured acrylic dentures at the Dental Centre, University College Hospital, Ibadan between January and July 2006 and were willing to participate were recruited into the study. A structured interviewer-administered questionnaire was used to record data from the patients. The questionnaire focused on patients’ demographic data, age of acrylic denture as at the time of fracture, causes and pattern o f fractures. The data were analysed using SPSS Version 11. A total of sixty-two patients were included in the study. They presented with sixty-nine fractured dentures. Five were complete dentures while 64 were partial dentures. The average life span was 7.4years ± 6.6 (SD) years. Early fracture was seen in 9 (13.4%), intermediate fracture in 29 (42%), and late fracture in 3 1 (44.9%) cases. The commonest cause o f fracture was mastication as seen in 30.4% of the cases while the least cause was fight (4.3%). The commonest site of fracture (34.8%) was the palatal plate around the crest o f the edentulous ridge while fracture of wrought metal clasps was the least, occurring in 1.4% o f cases'. We recommend proper design with balanced articulation and more emphasis on compliance to post insertion instructions by patients to prevent early fracture of acrylic dentures. Also, reinforcing the acrylic denture base especially in stress bearing area may prolong the life span of these prostheses.
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    A Study of dental caries prevalence in 12–14 year old school children in Ibadan, Nigeria
    (2005) Denloye, O.; Ajayi, D.; Bankole, O.
    The aim of the study was to determine dental caries prevalence among a representative sample of 12–14 year old school children in Ibadan, Nigeria with a view of determining Restorative Index and Met Need Index of the studied population. Dental caries was diagnosed according to the WHO method. Out of the 577 children in the age group, 65 children (11.2%) had dental caries experience as expressed with the DMFT index. More than 85% of the children were caries free. A mode of one DMFT was the highest score for the children although a 14-year-old pupil had DMFT score of 6. Female children had higher mean DMFT score of 2.03 1.13 compared with 1.78 1.0 for males (P 0.05). The Restorative Index (RI) and Met Need Index (MNI) for the children were very low as only the 14-year-old children had an RI of 3.45% and MNI of 0.11. Restorative Index reflects the restorative care of those who have suffered the disease and it is measured as a ratio of filled to filled plus decayed teeth percent that is F/F D percent. Met Need Index is an indication of treatment received by an individual and it is measured by the ratio of the mean missing plus filled teeth to mean decayed, missing and filled teeth that is M F/DMF. Since cost of management, which may be out of the reach of these children, has been identified as one of the factors militating against their receiving treatment, the result of this study suggest that oral health education with emphasis on correcting snacking habits of school children is desirable.