The Barry Project—a Three-Dimensional Assessment of Occlusal Treatment Change in a Consecutively Referred Sample: The Incisors

Abstract

The serial occlusal changes for a consecutively referred sample of malocclusion from a Welsh town are presented. The patients were assigned to one of four treatment regimes (meant to represent those commonly used in the U.K.) and treated to a rigid protocol. Twenty-five per cent of the cases were reviewed by an eight clinician panel. No bias in the original assignments was found although there was considerable interobserver variation. At defined pretreatment, post-treatment, and post-retention stages, records were collected and the study casts quantitatively measured using a reflex metrograph and an occlusal analysis programme. The results found for the overjet, overbite, crown inclination, and crown angulation are presented and discussed.

Index words:

• Barry Project
• Treatment Change
• Orthodontics
• Study Casts
• Reflex Metrograph