Gavião M B, Raymundo V G, Sobrinho L C
Department of Pediatric Dentistry, Dental School of Piracicaba, State University of Campinas.
Pediatr Dent. 2001 Nov-Dec;23(6):499-505.
The aim of this study was to evaluate masticatory efficiency in children with normal primary occlusion and malocclusion and to correlate efficiency with body variables.
Thirty children were divided into three groups: Group I with normal occlusion (n = 10), Group II with posterior crossbite (n = 10) and Group III with anterior open bite (n = 10). They chewed standardized silicone tablets for 20 strokes and the optical scanning system was used to calculate the particle size (area and perimeter). Results were compared among the groups. Body weight and height were correlated with masticatory efficiency.
Group I fragmented the tablets into a greater number of particles with smaller sizes than Groups II and III, and the differences were statistically significant (p<0.05). There was no difference between the children with crossbite and children with open bite. Correlation coefficients between body variables and masticatory efficiency were weak (p>0.05).
Occlusion is a factor of influence on masticatory process.
本研究旨在评估具有正常乳牙咬合及错牙合的儿童的咀嚼效率，并将效率与身体变量进行关联。
30名儿童被分为三组：第一组为正常咬合组（n = 10），第二组为后牙反合组（n = 10），第三组为前牙开牙合组（n = 10）。他们咀嚼标准化硅胶片20次，使用光学扫描系统计算颗粒大小（面积和周长）。对各组结果进行比较。体重和身高与咀嚼效率相关。
与第二组和第三组相比，第一组将硅胶片破碎成更多数量且尺寸更小的颗粒，差异具有统计学意义（p<0.05）。后牙反合儿童与前牙开牙合儿童之间无差异。身体变量与咀嚼效率之间的相关系数较弱（p>0.05）。
咬合是影响咀嚼过程的一个因素。
