The impact of tooth agenesis on oral health-related quality of life in children.

Objective: The purpose of this cross-sectional survey was to evaluate the psychosocial impact of tooth agenesis in children and to investigate the potential influence of gender, socioeconomic status, severity of tooth absence, and the number of retained primary teeth on their quality of life.

Materials And Methods: A total of 86 children (36 male, 50 female) with tooth agenesis, aged 11-14 years were recruited from the Birmingham Dental Hospital, United Kingdom. Thirty subjects with a complete dentition and having a low treatment need acted as controls.

Effects of playing a wind instrument on the occlusion.

Introduction: There is a popular belief among some musicians that playing a wind instrument regularly can affect the position of the teeth. The aim of this study was to investigate this hypothesis.

Methods: A cross-sectional observational study was carried out, comparing the occlusions of 170 professional musicians selected from 21 orchestras and organizations in the United Kingdom.

A comparison of different ligation methods on friction.

Introduction: An elastomeric module with a polymeric coating has been developed to reduce the friction of sliding mechanics. This in-vitro study examined the stability of the coating and compared the frictional properties of coated modules with those of other common ligation methods.

Methods: Six ligation methods (regular uncoated, slick [coated], conventional silver, easy-to-tie, silicone-impregnated, and standard silver modules) were used with standard stainless steel brackets and 0.

British Orthodontic Society, Chapman Prize Winner 2003. A novel in vitro culture model to investigate the reaction of the dentine-pulp complex to orthodontic force.

Objective: To develop a novel mandible slice organ culture model to investigate the effects of externally applied force on the dentine-pulp complex.

Design: In vitro organ culture.

Setting: School of Dentistry, Birmingham, UK.

A randomized clinical trial comparing the accuracy of direct versus indirect bracket placement.

Objective: To determine the accuracy of direct or indirect bracket placement.

Design: A prospective, randomized comparison of 2 different methods of bracket placement.

Setting: Queens Hospital, Burton upon Trent, UK between February and May 2001.