Background: The consumption of acidic foods and drinks is increasing in popularity. The purposes of the present study were to investigate the consumption patterns of acidic foods and drinks among several sport groups and to examine any relationships between consumption patterns and dental erosion. Methods: A questionnaire of oral health habits, diet and dental health was developed. Thirty-two sports clubs (690 members) of the University of Melbourne participated in a survey. A total of 508 usable questionnaires were received (74.9 per cent response). Descriptive statistics were prepared and logistic regression was used to explore relationships between dental erosion (dependent variable) and the independent variables.

Pulpectomy with Vitapex ® and Lesion Sterilization and Tissue Repair Therapy (LSTR) with 3Mix MP are treatment options for non-vital pulp treatment in primary teeth. The outcomes of both treatments have been reported, but with limited follow-up periods. Moreover, the factors relevant to their success have yet to be determined. The aim of this research was to evaluate the success of non-vital pulp treatments with Vitapex® pulpectomy and LSTR with 3Mix MP in different follow-up periods and to determine the factors that influence success of the treatment. This was a retrospective study of 73 teeth that had non-vital pulp treatment, either with Vitapex® or 3Mix MP, in healthy children, aged 3-10 years, at the Pediatric Dentistry Clinic, Chiang Mai University, Thailand. The records included clinical and radiographic examinations at follow-up periods ranging from 6-72 months. Success rates of both groups and the various factors that may influence success were determined by descriptive analysis. Including all follow-up periods (from 6 to 72 months), the average success rates of the Vitapex ® group determined by clinical and radiographic evaluations were 89.0% and 64.6%, respectively. The success rates of the 3Mix MP group determined by clinical and radiographic evaluations were 84.6% and 65.2%, respectively. The influences of various permanent restorations and the time elapsed between the temporary and permanent restorations were found to influence the success of non-vital pulp treatment in primary teeth. Both pulpectomy with Vitapex ® and LSTR with 3Mix MP were acceptable treatment options of non-vital pulp treatment in primary teeth.

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