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切导对最大可能牙尖交错位及前伸运动时所施加力量影响的评估——一项研究

Evaluation of Influence of Incisal Guidance on the Force Exerted at the Maximum Possible Intercuspal Position and in Protrusion - An Study.

作者信息

Lulla Samdisha S, Adaki Raghavendra, Samant Aditi, Adaki Shridevi, Surwase Swateja, Pardesi Shruti

机构信息

Department of Prosthodontics, Crown and Bridge, Bharati Vidyapeeth Dental College and Hospital, Sangli, Maharashtra, India.

Department of Oral Medicine and Radiology, Bharati Vidyapeeth Dental College and Hospital, Sangli, Maharashtra, India.

出版信息

J Pharm Bioallied Sci. 2023 Jul;15(Suppl 2):S931-S933. doi: 10.4103/jpbs.jpbs_284_23. Epub 2023 Apr 28.

DOI:10.4103/jpbs.jpbs_284_23
PMID:37694092
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10485491/
Abstract

AIM

Incisal guidance (IG) varies with maxillary and mandibular teeth wear. It in turn governs the forces on adhesive restorations. The present study evaluates the variation in forces because of changes in IG.

MATERIALS AND METHODS

IG was recorded on 46 subjects along with the distance from centric contact to incisal edge. Biteforce was recorded in the maximum possible intercuspal position (MIP) and in protrusion in the anterior region. Data analysis was performed using SPSS Version 21 at a confidence level ≤0.05. Pearson correlation test was applied to determine value.

RESULTS

The association between forces on anterior teeth in MIP and forces on teeth in contact in protrusion is statistically significant ( value 0.001). There is definitive correlation between forces exerted in MIP and the distance travelled from centric contact to incisal edge ( = 0.059). There is a weak correlation between forces on anterior teeth in MIP and protrusive IG ( value 0.172).

CONCLUSION

The force on anterior teeth in MIP with steeper IG is higher. Hence, the restoration margin should be kept away from the centric contact point.

摘要

目的

切导（IG）随上颌和下颌牙齿磨损而变化。它反过来又控制着粘结修复体上的力。本研究评估了由于IG变化而导致的力的变化。

材料与方法

记录了46名受试者的IG以及从正中接触到切缘的距离。在最大可能的牙尖交错位（MIP）和前牙区前伸时记录咬合力。使用SPSS 21版进行数据分析，置信水平≤0.05。应用Pearson相关检验确定 值。

结果

MIP时前牙上的力与前伸时接触牙齿上的力之间的关联具有统计学意义（ 值0.001）。MIP时施加的力与从正中接触到切缘的移动距离之间存在明确的相关性（ = 0.059）。MIP时前牙上的力与前伸IG之间存在弱相关性（ 值0.172）。

结论

IG较陡时，MIP时前牙上的力更大。因此，修复边缘应远离正中接触点。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8179/10485491/019daa713bff/JPBS-15-931-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8179/10485491/38feed12f024/JPBS-15-931-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8179/10485491/d0ec8403d933/JPBS-15-931-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8179/10485491/ce9dea654cf0/JPBS-15-931-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8179/10485491/8cac6bfe3615/JPBS-15-931-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8179/10485491/019daa713bff/JPBS-15-931-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8179/10485491/38feed12f024/JPBS-15-931-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8179/10485491/d0ec8403d933/JPBS-15-931-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8179/10485491/ce9dea654cf0/JPBS-15-931-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8179/10485491/8cac6bfe3615/JPBS-15-931-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8179/10485491/019daa713bff/JPBS-15-931-g005.jpg

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