E B Seldin1, M J Troulis, L B Kaban. 1. Department of Oral & Maxillofacial Surgery, Massachusetts General Hospital and Harvard School of Dental Medicine, Boston 02114, USA. Seldin.Edward@MGH.Harvard.edu
Abstract
PURPOSE: This study evaluated a new small, buried distractor, capable of curvilinear movement while following a fixed trajectory. The geometrical basis for such devices and the 3-dimensional treatment planning system required to make buried distractors practical are discussed. MATERIALS AND METHODS: A curved rack and worm-gear device, based on the design of a hose clamp, was constructed to produce a curved distraction path, and this distractor was tested in 2 minipigs using a protocol with zero latency and 1 mm/d x 7 days of distraction. Serial standardized lateral cephalograms were used to verify distractor function and path. RESULTS: Curvilinear distraction was documented by clinical examination and serial cephalometric analysis in the 2 minipigs. Observed angulation of the margins of the wedge-shaped distraction gap conformed to the calculated angulation based on the fixed radius of curvature of the distractor. CONCLUSION: Distraction along a curved trajectory using a small, semiburied, curvilinear device of novel design is feasible in the minipig mandible.
PURPOSE: This study evaluated a new small, buried distractor, capable of curvilinear movement while following a fixed trajectory. The geometrical basis for such devices and the 3-dimensional treatment planning system required to make buried distractors practical are discussed. MATERIALS AND METHODS: A curved rack and worm-gear device, based on the design of a hose clamp, was constructed to produce a curved distraction path, and this distractor was tested in 2 minipigs using a protocol with zero latency and 1 mm/d x 7 days of distraction. Serial standardized lateral cephalograms were used to verify distractor function and path. RESULTS: Curvilinear distraction was documented by clinical examination and serial cephalometric analysis in the 2 minipigs. Observed angulation of the margins of the wedge-shaped distraction gap conformed to the calculated angulation based on the fixed radius of curvature of the distractor. CONCLUSION: Distraction along a curved trajectory using a small, semiburied, curvilinear device of novel design is feasible in the minipig mandible.
Authors: Zachary S Peacock; Brad J Tricomi; Matthew E Lawler; William C Faquin; John C Magill; Brian A Murphy; Leonard B Kaban; Maria J Troulis Journal: J Oral Maxillofac Surg Date: 2014-01-16 Impact factor: 1.895
Authors: Zachary S Peacock; Brad J Tricomi; Brian A Murphy; John C Magill; Leonard B Kaban; Maria J Troulis Journal: J Oral Maxillofac Surg Date: 2013-03-15 Impact factor: 1.895
Authors: Leonard B Kaban; Edward B Seldin; Ron Kikinis; Krishna Yeshwant; Bonnie L Padwa; Maria J Troulis Journal: J Oral Maxillofac Surg Date: 2009-05 Impact factor: 1.895