Occlusal-supporting ability of individual maxillary and mandibular teeth
Occlusal-supporting ability of individual maxillary and mandibular teeth
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DOI：
10.1111/joor.12008
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发表时间：
2012-12-01
影响因子：
2.9
通讯作者：
Hiasa, K.
中科院分区：
文献类型：
--
作者：
Abe, Y.;Nogami, K.;Hiasa, K.
本研究旨在通过评估上颌牙齿和下颌牙齿的咬合支持能力来分析它们的咬合力、面积和压力。99例受试者(男49例，女50例；年龄20~37岁，平均24.7+/-3.4岁)，在牙弓上下颌间放置压敏片，在牙尖间位和牙尖间位两次最大咬合自愿性咬合。用专用分析设备和软件在压敏片上显色，计算单个牙齿的咬合力、牙合面面积和牙合力。用牙合内记录确定个别牙齿的咬合接触情况。所有数据采用非配对学生t检验、KruskalWallis检验和Scheffe检验进行多重比较，显著性水平为P<；0.05。虽然在偏侧性、性能和性别方面的影响部分存在统计学上的差异，但牙尖间位置的咬合压力随从边到边的滑动移动被作为每颗牙齿的代表性咬合支持能力。总体而言，咬合压力从中切牙开始逐渐升高，尖牙或第一前磨牙达到峰值，向第二磨牙急剧下降(P<；0.01)。我们认为，单个牙齿的咬合压力可以作为衡量咬合支持能力的一个指标。因此，建议将其作为流行病学研究的一个可能的合适参数，特别是用于验证咬合支持能力与残存牙周膜支持状态之间的关系。
This study aimed to analyse occlusal force, area and pressure for individual maxillary and mandibular teeth by assessing their occlusal-supporting abilities. Ninety-nine subjects (49 men and 50 women; average age, 24.7 +/- 3.4 years; range, 20-37 years) performed maximal voluntary clenching twice for 3 s in both the intercuspal position and the intercuspal position with sliding movement from edge-to-edge occlusion, with a pressure-sensitive sheet placed between the maxillary and mandibular dental arch. Occlusal force, area and pressure of individual teeth were calculated by colour development in the pressure-sensitive sheet with special analytical equipment and software. Occlusal contact condition of individual teeth was confirmed using the intra-occlusal record. All data were analysed using unpaired Student's t-test, KruskalWallis test and Scheffe's test for multiple comparisons with a significance level of P < 0.05. The occlusal pressure in the intercuspal position with sliding movement from edge-to-edge occlusion was adopted as the representative occlusal-supporting ability for each individual tooth, although there were, in part, statistically significant differences in the effects of laterality, performance and gender. Overall, the occlusal pressure increased gradually from the central incisor, peaked at the canine or first premolar and decreased sharplyand significantly (P < 0.01)-towards the second molar. We conclude that the occlusal pressure of individual teeth can be used as an indicator of occlusal-supporting ability. This is therefore proposed as a possible suitable parameter for epidemiologic research, specifically for verifying the relationship between occlusal-supporting ability and status of residual periodontal ligament support.