Biomedical subjects

K R de Mûelenaere

Publications and source records attributed to K R de Mûelenaere.

4 recordsLinked to original sources

PubMed1998

External root resorption in orthodontics: avoiding high risk teeth. A case report.

External root resorption is one of the most exasperating and least understood clinical problems in orthodontics. Numerous studies have been conducted, attempting to establish the factors causing root resorption of permanent teeth. Considerable variation exists however, in the extent and distribution of root resorption, seen in the orthodontic treatment of apparently similar cases. After an excellent review of the literature, Brezniak and Wassertein (1993) concluded that the most significant disgnostic aid in predicting whether root resorption would occur during orthodontic treatment, is the radiographic evidence of root resorption before treatment. A case is reported, describing the dilemma of orthodontically treating a patient, who had previously experienced trauma to the upper right central incisor, leading to external root resorption.

Cephalometry↗

PubMed1998

The treatment need of a group of senior dental students as assessed by the IOTN and PAR indices.

Recently the Index of Orthodontic Treatment Need (IOTN) and Peer Assessment Rating (PAR) were introduced in the United Kingdom as a standard for future epidemiological research in orthodontics. The purpose of this study was to assess the suitability of these indices for South African epidemiological studies and to evaluate the treatment need of a group of senior dental students. Examinations in accordance with the IOTN and PAR were performed on 206 dental students by three postgraduate orthodontic students. According to the Dental Health Component of the IOTN 54.9 per cent of the sample had no treatment need, 26.7 per cent had a moderate treatment need and 18.4 per cent had an urgent treatment need. 74.2 per cent of the students were at the no-treatment-needed end of the aesthetic scale, which compared poorly with the 88.5 per cent recorded by student self assessment. The majority of dental students in this study were not in need of orthodontic treatment. Certain occlusal traits common to negroids, such as bimaxillary protrusion, are not represented in these assessment instruments and minor adjustments may be needed to make the systems more applicable in these population groups.

Adult↗

PubMed1997

Possibilities for prevention of malocclusions in South African children.

An effective preventive and interceptive (P & I) orthodontic programme for young children would reduce the need for comprehensive orthodontic treatment. The aim of this study was to determine the incidence of the development of preventable malocclusions amongst a group of children at the mixed dentition stage. An examination (T1) was performed on 951 8-9 year old children from 9 primary schools in Pretoria. Of these, 493 children could be traced for re-examination 2 years later (T2). The following changes in the occlusion were noted: In 12.1 per cent of the 493 children, an acceptable occlusion at T1 had developed into a malocclusion at T2. A malocclusion was recorded for 97 per cent of the sample at T2, yet only 32.4 per cent of the subjects had received orthodontic treatment between T1 and T2. A mere 3.3 per cent of the children examined were treated at state clinics. In 64.6 per cent of cases the malocclusion was not diagnosed nor addressed. It is suggested that bi-annual orthodontic screening of all 7-12 year old children and implementation of P & I orthodontic treatment at community clinics would contribute to achieving the primary health care objectives of the Reconstruction and Development Programme for South Africa.

Child↗

PubMed1995

The status of the developing occlusion of 8-9 year-old children from a lower socio-economic group in a developing country.

The aim of this study was to determine the percentage of developing malocclusions that are present at the age of 8-9 years. This data will be used for a follow-up study on the same sample two years hence, in order to formulate soundly based recommendations to Public Health Authorities on the implementation of a community directed, preventive and interceptive orthodontic programme. A total of 936 children were examined by 3 investigators, at 9 primary schools in the lower socio-economic suburbs of a large urban area. The majority of subjects (66.5 per cent) presented with Class I malocclusions. A significantly higher percentage of white children however, presented with Class II malocclusions, while black children showed a higher tendency toward Class III malocclusion. Well circumscribed anterior openbites were found in 27.8 per cent of black children, but no specific causative factors could be identified. Early loss of primary molars and canines occurred in both groups. There was a statistically significant difference (p < 0.05) between the mean posterior arch lengths of the two groups, the black children having on average 2.2 mm longer arch lengths.

Child↗