Abstract：
OBJECTIVE: The aim of the present research was to assess the mesiodistal angulation of the maxillary anterior teeth utilizing Image J computer software, a Profile projector, and a Custom-made jig.
METHODS: A total of 34 subjects (17 males and 17 females) were chosen from a group of 18-30 years old with bilateral Angle Class I molars and canine relationships. One manual approach (Custom-made jig) and two digital methods (J computer software, a Profile projector) were used to record the mesiodistal angulation in incisal view. The individuals had alginate impressions made, and a facebow was used to capture the maxilla\'s spatial relationship with the cranium. The articulated cast with the help of mounting ring moved to the specially customized jig, then the angulations was measured in the incisal view after the casts were placed in a semi-adjustable articulator. Data were recorded and statistically analyzed.
RESULTS: The mesiodistal angulation in the incisal view via three methods between the 17 males and 17 females has statistically significant different. Although the mesiodistal angulation for maxillary lateral incisor and canine did not show any statistically significant difference, the maximum and minimum values obtained were always greater in males in comparison with the females. This indicates that the positions of six maxillary anterior teeth in the males resulted in the creation of upward sweep of incisal edges of central and lateral incisors which was also referred to as \"smiling line\" producing masculine surface anatomy more squared and vigorous while feminine surface anatomy being more rounded, soft, and pleasant. There was no statistically significant difference between the right and left sides, indicating bilateral arch symmetry and the symmetrical place of the right teeth compared with the left side\'s corresponding teeth.
CONCLUSIONS: On conclusion, according to the current study\'s findings, all three approaches can measure the mesiodistal angulations of maxillary anterior teeth in incisal view with clinically acceptable accuracy. The digital methods, which included using the Image J computer software and the profile projector, achieved more accurate results than the manual method.
CONCLUSIONS: The outcomes of this study\'s mesiodistal angulations can be used as a reference for placing teeth in both fully and partially edentulous conditions. This study contributes to a better understanding of the importance of achieving the ideal occlusion in the Indian population by placing the maxillary anterior teeth at the proper mesiodistal angulation. How to cite this article: Shadaksharappa SH, Lahiri B, Kamath AG, et al. Evaluation of Mesiodistal Angulation of Maxillary Anterior Teeth in Incisal View Using Manual and Digital Methods: An In Vivo Study. J Contemp Dent Pract 2024;25(4):320-325.
METHODS: A total of 34 subjects (17 males and 17 females) were chosen from a group of 18-30 years old with bilateral Angle Class I molars and canine relationships. One manual approach (Custom-made jig) and two digital methods (J computer software, a Profile projector) were used to record the mesiodistal angulation in incisal view. The individuals had alginate impressions made, and a facebow was used to capture the maxilla\'s spatial relationship with the cranium. The articulated cast with the help of mounting ring moved to the specially customized jig, then the angulations was measured in the incisal view after the casts were placed in a semi-adjustable articulator. Data were recorded and statistically analyzed.
RESULTS: The mesiodistal angulation in the incisal view via three methods between the 17 males and 17 females has statistically significant different. Although the mesiodistal angulation for maxillary lateral incisor and canine did not show any statistically significant difference, the maximum and minimum values obtained were always greater in males in comparison with the females. This indicates that the positions of six maxillary anterior teeth in the males resulted in the creation of upward sweep of incisal edges of central and lateral incisors which was also referred to as \"smiling line\" producing masculine surface anatomy more squared and vigorous while feminine surface anatomy being more rounded, soft, and pleasant. There was no statistically significant difference between the right and left sides, indicating bilateral arch symmetry and the symmetrical place of the right teeth compared with the left side\'s corresponding teeth.
CONCLUSIONS: On conclusion, according to the current study\'s findings, all three approaches can measure the mesiodistal angulations of maxillary anterior teeth in incisal view with clinically acceptable accuracy. The digital methods, which included using the Image J computer software and the profile projector, achieved more accurate results than the manual method.
CONCLUSIONS: The outcomes of this study\'s mesiodistal angulations can be used as a reference for placing teeth in both fully and partially edentulous conditions. This study contributes to a better understanding of the importance of achieving the ideal occlusion in the Indian population by placing the maxillary anterior teeth at the proper mesiodistal angulation. How to cite this article: Shadaksharappa SH, Lahiri B, Kamath AG, et al. Evaluation of Mesiodistal Angulation of Maxillary Anterior Teeth in Incisal View Using Manual and Digital Methods: An In Vivo Study. J Contemp Dent Pract 2024;25(4):320-325.
摘要：
目的：本研究的目的是利用ImageJ计算机软件评估上颌前牙的中远端角度，a轮廓投影仪，和定制的夹具。
方法：从一组18-30岁的受试者中选择了34名受试者（男性17名，女性17名），这些受试者具有双侧角度I类磨牙和犬的关系。一种手动方法(定制夹具)和两种数字方法(J计算机软件，a轮廓投影仪）用于记录切面视图中的中远侧角度。个体有藻酸盐印模，面弓被用来捕捉上颌骨与颅骨的空间关系。铰接铸造与安装环的帮助移动到专门定制的夹具，然后，在将铸件放置在半可调式咬合器中之后，在切面视图中测量角度。记录数据并进行统计学分析。
结果：17名男性和17名女性之间通过三种方法在切面视图中的近端角具有统计学上的显着差异。尽管上颌侧切牙和犬的中远侧角度没有显示出任何统计学上的显着差异，与女性相比，男性获得的最大值和最小值总是更大。这表明男性的六个上颌前牙的位置导致中央和侧切牙的切缘向上扫掠，这也被称为“微笑线”，使男性的表面解剖结构更加方形和有力，而女性的表面解剖结构更加圆形，软,和愉快的。右侧和左侧之间没有统计学上的显着差异，表明双侧牙弓对称和右侧牙齿与左侧相应牙齿的对称位置。
结论：结论，根据目前的研究结果,所有这三种方法都可以在切面视图中测量上颌前牙的中远端角度，并且具有临床上可接受的准确性。数字方法，其中包括使用ImageJ计算机软件和轮廓投影仪，取得了比手动方法更准确的结果。
结论：本研究的中远端角化结果可作为完全和部分缺牙条件下放置牙齿的参考。这项研究有助于通过将上颌前牙放置在适当的中远端角度来更好地了解在印度人群中获得理想咬合的重要性。如何引用这篇文章:ShadaksharappaSH,拉希里B,KamathAG,etal.使用手动和数字方法在切口视图中评估上颌前牙的中远端角：体内研究。JContempDentPract2024；25(4)：320-325。
方法：从一组18-30岁的受试者中选择了34名受试者（男性17名，女性17名），这些受试者具有双侧角度I类磨牙和犬的关系。一种手动方法(定制夹具)和两种数字方法(J计算机软件，a轮廓投影仪）用于记录切面视图中的中远侧角度。个体有藻酸盐印模，面弓被用来捕捉上颌骨与颅骨的空间关系。铰接铸造与安装环的帮助移动到专门定制的夹具，然后，在将铸件放置在半可调式咬合器中之后，在切面视图中测量角度。记录数据并进行统计学分析。
结果：17名男性和17名女性之间通过三种方法在切面视图中的近端角具有统计学上的显着差异。尽管上颌侧切牙和犬的中远侧角度没有显示出任何统计学上的显着差异，与女性相比，男性获得的最大值和最小值总是更大。这表明男性的六个上颌前牙的位置导致中央和侧切牙的切缘向上扫掠，这也被称为“微笑线”，使男性的表面解剖结构更加方形和有力，而女性的表面解剖结构更加圆形，软,和愉快的。右侧和左侧之间没有统计学上的显着差异，表明双侧牙弓对称和右侧牙齿与左侧相应牙齿的对称位置。
结论：结论，根据目前的研究结果,所有这三种方法都可以在切面视图中测量上颌前牙的中远端角度，并且具有临床上可接受的准确性。数字方法，其中包括使用ImageJ计算机软件和轮廓投影仪，取得了比手动方法更准确的结果。
结论：本研究的中远端角化结果可作为完全和部分缺牙条件下放置牙齿的参考。这项研究有助于通过将上颌前牙放置在适当的中远端角度来更好地了解在印度人群中获得理想咬合的重要性。如何引用这篇文章:ShadaksharappaSH,拉希里B,KamathAG,etal.使用手动和数字方法在切口视图中评估上颌前牙的中远端角：体内研究。JContempDentPract2024；25(4)：320-325。
