Marcello-Machado Raissa Micaella, Bielemann Amália Machado, Nascimento Gustavo Giacomelli, Pinto Luciana de Rezende, Del Bel Cury Altair Antoninha, Faot Fernanda
Graduate Program in Dentistry, Federal University of Pelotas, Pelotas, Brazil.
Department of Semiology and Clinics, School of Dentistry, Federal University of Pelotas, Pelotas, Brazil.
J Prosthodont Res. 2017 Jul;61(3):315-323. doi: 10.1016/j.jpor.2016.12.002. Epub 2016 Dec 15.
This cross-sectional study analyzes how bone resorption affects the masticatory function and investigates the relation between perceived and measured masticatory function.
Thirty complete dentures wearers were divided in two groups according to mandible bone atrophy based on the classification criteria from Cawood & Howell. Retention and stability of the mandibular complete denture, masticatory performance (MP) indexes (X_50 and B) and masticatory efficiency (ME, sieves 4 and 2.8) were evaluated. Geriatric Oral Health Assessment Index (GOHAI) and Dental Impact on Daily Living (DIDL) questionnaires were completed by the patients.
A strong correlation between bone atrophy and poor retention was found (P=0.0132). Neither masticatory performance indexes nor GOHAI and DIDL domains showed statistical differences (P>0.05) when patients were compared according to the atrophy criteria. Mandibular length showed a negative correlation with ME4, showing a positive association (R=0.17, β=-0.67, P=0.029). Mandibular denture retention was significantly correlated with MPB (P=0.01) and ME2.8 (P=0.01). GOHAI showed a positive association between the physical and the functional domains and ME2.8 (R=0.17; β=1.22; P=0.02). DIDL showed a negative association between ME4 and oral comfort domain (R=0.16; β=-2.94; P=0.02).
Mandibular bone height does not directly affect the masticatory function and is inversely correlated with the self-perceived masticatory ability.
本横断面研究分析骨吸收如何影响咀嚼功能，并研究主观咀嚼功能与测量的咀嚼功能之间的关系。
根据Cawood & Howell的分类标准，将30名全口义齿佩戴者根据下颌骨萎缩情况分为两组。评估下颌全口义齿的固位和稳定性、咀嚼性能（MP）指标（X_50和B）以及咀嚼效率（ME，4号筛和2.8号筛）。患者完成老年口腔健康评估指数（GOHAI）和日常生活中的牙齿影响（DIDL）问卷。
发现骨萎缩与固位不良之间存在强相关性（P = 0.0132）。根据萎缩标准比较患者时，咀嚼性能指标、GOHAI和DIDL各领域均未显示出统计学差异（P>0.05）。下颌长度与ME4呈负相关，呈正相关（R = 0.17，β = -0.67，P = 0.029）。下颌义齿固位与MPB（P = 0.01）和ME2.8（P = 0.01）显著相关。GOHAI显示身体和功能领域与ME2.8之间存在正相关（R = 0.17；β = 1.22；P = 0.02）。DIDL显示ME4与口腔舒适度领域之间存在负相关（R = 0.16；β = -2.94；P = 0.02）。
下颌骨高度不直接影响咀嚼功能，且与自我感知的咀嚼能力呈负相关。
