评价上颌第一前磨牙近中牙根凹陷与牙周骨破坏的关系。

Evaluation of the relationship between periodontal bone destruction and mesial root concavity of the maxillary first premolar.

机构信息

Department of Periodontology, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.

Anatomy, Department of Basic Medical Sciences, Faculty of Dentistry, Ankara University, Ankara, Turkey.

出版信息

BMC Oral Health. 2024 Jun 26;24(1):735. doi: 10.1186/s12903-024-04494-1.

DOI:10.1186/s12903-024-04494-1

PMID:38926720

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11210086/

Abstract

BACKGROUND

The purpose of this study was to investigate the morphology of maxillary first premolar mesial root concavity and to analyse its relation to periodontal bone loss (BL) using cone beam computed tomography (CBCT) and panoramic radiographs.

METHODS

The mesial root concavity of maxillary premolar teeth was analysed via CBCT. The sex and age of the patients, starting position and depth of the root concavity, apicocoronal length of the concavity on the crown or root starting from the cementoenamel junction (CEJ), total apicocoronal length of the concavity, amount of bone loss both in CBCT images and panoramic radiographs, location of the furcation, length of the buccal and palatinal roots, and buccopalatinal cervical root width were measured.

RESULTS

A total of 610 patients' CBCT images were examined, and 100 were included in the study. The total number of upper premolar teeth was 200. The patients were aged between 18 and 65 years, with a mean age of 45.21 ± 13.13 years. All the teeth in the study presented mesial root concavity (100%, n = 200). The starting point of concavity was mostly on the cervical third of the root (58.5%). The mean depth and buccolingual length measurements were 0.96 mm and 4.32 mm, respectively. Depth was significantly related to the amount of alveolar bone loss (F = 5.834, p = 0.001). The highest average concavity depth was 1.29 mm in the group with 50% bone loss. The data indicated a significant relationship between the location of the furcation and bone loss (X = 25.215, p = 0.003). Bone loss exceeded 50% in 100% of patients in whom the furcation was in the cervical third and in only 9.5% of patients in whom the furcation was in the apical third (p = 0.003).

CONCLUSIONS

According to the results of this study, the depth of the mesial root concavity and the coronal position of the furcation may increase the amount of alveolar bone loss. Clinicians should be aware of these anatomical factors to ensure accurate treatment planning and successful patient management.

摘要

背景

本研究旨在通过锥形束 CT（CBCT）和全景片研究上颌第一前磨牙近中根凹陷的形态，并分析其与牙周骨丧失（BL）的关系。

方法

通过 CBCT 分析上颌前磨牙的近中根凹陷。测量患者的性别和年龄、根凹陷的起始位置和深度、从釉牙骨质界（CEJ）开始的冠根凹陷的根尖-冠向长度、凹陷的总根尖-冠向长度、CBCT 图像和全景片上的骨丧失量、分叉位置、颊腭根长度以及颊腭根颈宽。

结果

共检查了 610 例患者的 CBCT 图像，其中 100 例纳入研究。上颌前磨牙总数为 200 颗。患者年龄 18-65 岁，平均年龄 45.21±13.13 岁。研究中所有牙齿均存在近中根凹陷（100%，n=200）。凹陷起始点多位于根的颈三分之一（58.5%）。凹陷深度和颊舌向长度的平均值分别为 0.96mm 和 4.32mm。深度与牙槽骨丧失量显著相关（F=5.834，p=0.001）。骨丧失 50%组的平均凹陷深度最大为 1.29mm。数据表明，分叉位置与骨丧失之间存在显著关系（X²=25.215，p=0.003）。在分叉位于颈三分之一的患者中，100%的患者骨丧失超过 50%，而在分叉位于根尖三分之一的患者中，只有 9.5%的患者骨丧失超过 50%（p=0.003）。