Department of Oral and Maxillofacial Surgery, Special Dental Care and Orthodontics, Erasmus Medical Center, Wytemaweg 80, 3015 CN, Rotterdam, The Netherlands.
Oral Maxillofac Surg. 2024 Jun;28(2):909-917. doi: 10.1007/s10006-024-01226-1. Epub 2024 Feb 15.
This study aims to provide insights into the developmental characteristics of the upper lateral incisor in individuals with unilateral clefts.
Panoramic radiographs of a consistent group of Caucasian children taken over time (ages 6, 9, and 12) were extensively reviewed. The study assessed the distribution pattern, eruption path, tooth development, and crown size of the upper lateral incisor within the cleft region.
The most commonly observed distribution pattern was the lateral incisor located distal to the cleft, accounting for 49.2% of cases. Furthermore, a significant delay in tooth development of the upper lateral incisor on the cleft side was noted at ages 6 and 9 (p > 0.001). Compared with the non-cleft side, these incisors often erupted along the alveolar cleft and exhibited microdontia (88.3%, p < 0.041).
Lateral incisors on the cleft side display unique distribution patterns, microdontia, and delayed tooth development. Careful monitoring of the cuspid eruption is essential, as it can influence the eruption of the lateral incisor.
A comprehensive understanding of the development of the upper lateral incisor relative to the cleft is vital for determining its prognosis over time. The position of the upper lateral incisor can also influence the timing and prognosis of secondary alveolar bone grafting. Preserving the upper lateral incisor favors arch length, perimeter, and symmetry in individuals with unilateral clefts.
本研究旨在深入了解单侧唇腭裂患者上颌侧切牙的发育特点。
对一组具有一致性的白种儿童的全景片进行了长时间（6 岁、9 岁和 12 岁）的广泛回顾。该研究评估了侧切牙在裂隙区域的分布模式、萌出路径、牙齿发育和冠部大小。
最常见的分布模式是侧切牙位于裂隙的远中，占 49.2%。此外，在 6 岁和 9 岁时，发现裂隙侧上颌侧切牙的牙齿发育明显延迟（p>0.001）。与非裂隙侧相比，这些侧切牙通常沿牙槽裂隙萌出，并表现为小牙（88.3%，p<0.041）。
裂隙侧的侧切牙具有独特的分布模式、小牙和牙齿发育延迟。需要仔细监测尖牙的萌出情况，因为它会影响侧切牙的萌出。
全面了解上颌侧切牙相对于裂隙的发育情况，对于随时间推移确定其预后至关重要。侧切牙的位置也会影响二期牙槽骨移植的时间和预后。保留上颌侧切牙有利于单侧唇腭裂患者的牙弓长度、周长和对称性。
