Pop Silvia Izabella, Cerghizan Diana, Mițariu Loredana, Jánosi Kinga Mária, D'Andrea Antonella
Faculty of Dental Medicine, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Târgu Mureș, 38 Gh. Marinescu Str., 540139 Târgu Mureș, Romania.
Faculty of Dental Medicine, Lucian Balga University, Bd-ul. Victoriei, 550024 Sibiu, Romania.
Diagnostics (Basel). 2024 Aug 13;14(16):1757. doi: 10.3390/diagnostics14161757.
For years, there has been a long debate about the impact of orthodontic treatment on the periodontium of patients. Therefore, it is important to understand the effects of orthodontic forces on the periodontium. The objective of this study was to evaluate the height of the alveolar bone at the four surfaces of specific teeth and the root length of the central incisors before and after orthodontic treatment.
CBCTs from a group of fifty patients were evaluated before (T0) and after orthodontic treatment (T1). Evaluations of the alveolar bone were performed by measuring the distance from the most apical point of the marginal portion to the CEJ at the buccal (B-ABL), lingual (L-ABL), mesial (M-ABL), and distal (D-ABL) surfaces of the central incisor (CI), first premolar (1st PM), and first molar (1st M). Meanwhile, root resorptions were evaluated by measuring the distance from the center of the tooth at the CEJ to the most apical point of the central incisor.
The reduction in the alveolar bone level was highest at the buccal segment (75%) and lowest at the distal (42%) segment, although the decrease was not statistically significant. Root resorption, in terms of reduction in the total length, was detected in the upper central incisor.
Fixed orthodontic treatment can produce a significant reduction in root length, but not at the level of the alveolar bone.
多年来，关于正畸治疗对患者牙周组织的影响一直存在长期争论。因此，了解正畸力对牙周组织的影响很重要。本研究的目的是评估正畸治疗前后特定牙齿四个表面的牙槽骨高度和中切牙的牙根长度。
对一组50例患者正畸治疗前（T0）和治疗后（T1）的锥形束计算机断层扫描（CBCT）进行评估。通过测量中切牙（CI）、第一前磨牙（第一PM）和第一磨牙（第一M）颊侧（B-ABL）、舌侧（L-ABL）、近中（M-ABL）和远中（D-ABL）表面边缘部分最根尖点到牙釉质牙骨质界（CEJ）的距离来评估牙槽骨。同时，通过测量中切牙在CEJ处牙中心到最根尖点的距离来评估牙根吸收情况。
牙槽骨水平降低在颊侧段最高（75%），在远中段最低（42%），尽管这种降低无统计学意义。在上颌中切牙中检测到牙根吸收，表现为总长度的减少。
固定正畸治疗可导致牙根长度显著缩短，但对牙槽骨水平无影响。
