Albayrak Elif, Senisik Neslihan Ebru
Department of Orthodontics, Faculty of Dentistry, Süleyman Demirel University, Isparta, Turkey.
BMC Oral Health. 2025 Jul 2;25(1):1018. doi: 10.1186/s12903-025-06383-7.
This study aimed to evaluate the morphological characteristics of resorbed and non-resorbed lateral incisors adjacent to unilateral palatally impacted maxillary canines intended to be positioned in the dental arch during orthodontic treatment. The volumetric and morphological differences between lateral incisors adjacent to impacted canines and those adjacent to erupted canines were examined.
The study group consisted of fifty participants with unilateral palatally impacted maxillary canines. The sample was divided into two groups: the resorbed group (RG) and the non-resorbed group (NRG), based on the resorption status of the lateral incisor adjacent to the maxillary impacted canine. Volumetric, dimensional, and angular differences were evaluated between these groups.
No statistically significant difference was found between the RG and NRG groups in terms of lateral incisors. In both groups, there was a statistically significant decrease in lateral incisor volume, mesiodistal and buccolingual root width, and crown-root angle on the impacted side compared to the other side. In the RG group, the cervical, middle, and apical third volumes of the resorbed lateral root on the impacted side were statistically lower than on the other side.
In the RG and NRG groups, the volume and morphological features of the lateral incisors adjacent to the impacted canines were similar and smaller than those of the lateral incisors on the erupted side. In cases where it is desired to maintain the lateral incisors, whether slightly resorbed or not, in the dental arch, it is recommended that orthodontic treatment be optimized for stabilization.
本研究旨在评估单侧腭侧阻生上颌尖牙正畸治疗时拟排入牙弓，与之相邻的吸收和未吸收侧切牙的形态特征。研究了阻生尖牙相邻侧切牙与萌出尖牙相邻侧切牙之间的体积和形态差异。
研究组由50名单侧腭侧阻生上颌尖牙患者组成。根据上颌阻生尖牙相邻侧切牙的吸收情况，将样本分为两组：吸收组（RG）和未吸收组（NRG）。评估两组之间的体积、尺寸和角度差异。
RG组和NRG组的侧切牙在统计学上无显著差异。两组中，与另一侧相比，阻生侧侧切牙的体积、近远中根宽和颊舌根宽以及冠根角均有统计学意义的减小。在RG组中，阻生侧吸收侧切牙根的颈段、中段和根尖段体积在统计学上低于另一侧。
在RG组和NRG组中，阻生尖牙相邻侧切牙的体积和形态特征相似，且小于萌出侧侧切牙。在希望将侧切牙（无论是否有轻微吸收）保留在牙弓中的情况下，建议优化正畸治疗以实现稳定。
