Relationship between malocclusion, orthodontic treatment, and tooth wear.

INTRODUCTION: Although the association between orthodontic treatment and dental health has been studied previously, no studies have hitherto investigated whether the need for, or the receipt of, orthodontic treatment leads to differences in tooth wear in the long term. METHODS: In this retrospective, cross-sectional, association study, an index specifically designed for dental study casts was used to examine tooth wear in 307 adults aged 30 to 31 years. RESULTS: The men showed significantly higher levels of tooth wear than did the women. No significant differences in tooth wear in relation to need for or receipt of orthodontic treatment were recorded. Likewise, there appeared to be no significant association between tooth wear and reported intake of acidic drinks and foods. CONCLUSIONS: Neither the need for nor the provision of orthodontic treatment contributes to increased tooth wear.

Vital pulpotomy in the primary dentition: attitudes and practices of community dental staff in Wales.

OBJECTIVE: The International Agency for Research on Cancer (IARC) has classified formaldehyde as carcinogenic to humans, leaving the dental profession to look for viable substitutes to formocresol in the vital pulpotomy technique. This study was designed to examine the attitudes and practices of Community Dental Service (CDS) staff in Wales in relation to vital pulpotomy for primary molars 18 months following the IARC's press release. METHODS: The study employed a postal questionnaire. RESULTS: Questionnaires were returned by 79 (78.2%) of the CDS staff surveyed, yielding a sample of 65 dentists practising the technique. The most commonly used pulpotomy agents were formocresol, paraformaldehyde and ferric sulphate. Twenty-seven (41.5%) dentists expressed concern regarding their preferred pulpotomy agent and 17 (26.2%) were considering changing their technique. Only one respondent (1.5% of the sample) routinely took preoperative radiographs; follow-up radiographs were routinely taken by only three dentists (4.6%). Only 44 respondents (67.7%) always used local anaesthesia for this form of treatment. Amalgam was the most commonly used restorative material. Twenty-two respondents (33.8%) stated that they would pulp treat a primary molar on more than one occasion. CONCLUSIONS: The results of this study suggest that there is need for relevant continuing professional development courses for CDS staff in Wales.