Abstract：
OBJECTIVE: Presurgical Nasoalveolar molding (PNAM) is a technique used for cleft lip and palate patients prior to cheiloplasty. However, concerns exist regarding its negative impact on maxillary arch growth.This study aimed to assess the effect of selective trimming in NAM on maxillary arch growth in patients with unilateral cleft lip palate.
METHODS: The retrospective observational study analyzed the study casts of 30 patients before and after undergoing nasoalveolar molding treatment. Study casts which were repositories of the institute were analyzed and segregated as Group A: NAM given with selective trimming of the appliance, and Group B: NAM without selective trimming of the appliance. Pre and post-treatment casts were assessed digitally at L-L\' (Intercleft segment width), C-C\' (Intercanine width), T-T\' (Alveolar arch width), L-TT\' (Alveolar arch length from major cleft segment), and L\'-TT\' (Alveolar arch length from minor cleft segment) RESULTS: A notable significant difference between Group A\'s and B\'s mean Alveolar arch width and Intercleft segment width was seen. Whereas parameters such as intercanine width, and alveolar arch length as functions from major and minor segments showed no significant variance.
CONCLUSIONS: Although NAM has been known to affect the growth of the maxillary arch, this study proposes that techniques such as selective trimming can help counteract this drawback.
METHODS: The retrospective observational study analyzed the study casts of 30 patients before and after undergoing nasoalveolar molding treatment. Study casts which were repositories of the institute were analyzed and segregated as Group A: NAM given with selective trimming of the appliance, and Group B: NAM without selective trimming of the appliance. Pre and post-treatment casts were assessed digitally at L-L\' (Intercleft segment width), C-C\' (Intercanine width), T-T\' (Alveolar arch width), L-TT\' (Alveolar arch length from major cleft segment), and L\'-TT\' (Alveolar arch length from minor cleft segment) RESULTS: A notable significant difference between Group A\'s and B\'s mean Alveolar arch width and Intercleft segment width was seen. Whereas parameters such as intercanine width, and alveolar arch length as functions from major and minor segments showed no significant variance.
CONCLUSIONS: Although NAM has been known to affect the growth of the maxillary arch, this study proposes that techniques such as selective trimming can help counteract this drawback.
摘要：
目的：术前鼻肺泡成型术（PNAM）是一种用于唇裂患者唇裂成形术前的技术。然而,对上颌弓生长的负面影响存在担忧。本研究旨在评估NAM选择性修剪对单侧唇裂患者上颌弓生长的影响。
方法：回顾性观察性研究分析了30例患者经鼻肺泡成型治疗前后的研究模型。对研究所存储库的研究模型进行了分析和隔离，作为A组：NAM对器具进行了选择性修剪，和B组:没有对器具进行选择性修整的NAM。以L-L\'（裂间段宽度）数字评估治疗前后的铸型，C-C'(犬间宽度),T-T'(牙弓宽度),L-TT'(来自大裂段的牙槽弓长度),结果：A组和B组的平均牙槽弓宽度和间隙段宽度之间存在显着差异。而诸如犬齿间宽度等参数，和牙槽弓长度作为主要和次要节段的函数没有显着差异。
结论：尽管已知NAM会影响上颌弓的生长，这项研究表明，选择性修剪等技术可以帮助抵消这一缺点。
方法：回顾性观察性研究分析了30例患者经鼻肺泡成型治疗前后的研究模型。对研究所存储库的研究模型进行了分析和隔离，作为A组：NAM对器具进行了选择性修剪，和B组:没有对器具进行选择性修整的NAM。以L-L\'（裂间段宽度）数字评估治疗前后的铸型，C-C'(犬间宽度),T-T'(牙弓宽度),L-TT'(来自大裂段的牙槽弓长度),结果：A组和B组的平均牙槽弓宽度和间隙段宽度之间存在显着差异。而诸如犬齿间宽度等参数，和牙槽弓长度作为主要和次要节段的函数没有显着差异。
结论：尽管已知NAM会影响上颌弓的生长，这项研究表明，选择性修剪等技术可以帮助抵消这一缺点。
