Karthik K V Guru Charan, Padmaja B Indira, Babu N Suresh, Haritha J, Nikhil M, Priya K Shanthi
Department of Prosthodontics, Army College of Dental Sciences, Hyderabad, Telangana, India.
Department of Prosthodontics, CKS Teja Institute of Dental Sciences and Research, Tirupathi, Andhra Pradesh, India.
J Family Med Prim Care. 2020 Jan 28;9(1):298-302. doi: 10.4103/jfmpc.jfmpc_772_19. eCollection 2020 Jan.
The distance between the central incisor to incisive papilla (CI-IP) is constant and regarded as one of the landmarks for the placement of artificial teeth in the prosthesis. Earlier studies were done in relation to anterior border of papilla but after extraction the incisive papilla recedes changing the position of anterior border.
In this study, 100 dentulous subjects were divided into two groups (males and females) with 50 in each group. Maxillary alginate impressions were made and base poured using levelling instrument to standardize all casts and surveyed on the surveyor for uniformity of the casts. The measured distances were analyzed using Student -test analysis.
The ovoid arch was the commonest arch form found in both males and females with slightly more prevalent in females. Analysis was done using Student -test analysis and found that the mean distance from CI-IP was found to be at 12.85 mm and 12.39 mm in males and females, respectively.
When square arch form (both male and female) mean CI-IP was compared with the total sample mean CI-IP, the mean CI-IP of square arch form was less than that of total sample with greater significance ( < 0.05). When ovoid arch form (both male and female) mean CI-IP was compared with the square arch form (both male and female) mean CI-IP, the mean CI-IP of ovoid arch form was greater than that of square arch form with greatest significance ( = 0).
中切牙至切牙乳头（CI - IP）的距离恒定，被视为义齿中人工牙排列的标志之一。早期研究是针对乳头的前缘进行的，但拔牙后切牙乳头退缩，导致前缘位置改变。
本研究将100名有牙颌受试者分为两组（男性和女性），每组50人。制取上颌藻酸盐印模，使用调平仪灌注模型底座以使所有模型标准化，并在观测仪上进行测量以确保模型的一致性。使用学生t检验分析测量距离。
卵形牙弓是男性和女性中最常见的牙弓形态，在女性中略为普遍。使用学生t检验分析发现，男性和女性从CI - IP的平均距离分别为12.85毫米和12.39毫米。
当将方形牙弓形态（男性和女性）的平均CI - IP与总样本平均CI - IP进行比较时，方形牙弓形态的平均CI - IP小于总样本，差异具有显著性（<0.05）。当将卵形牙弓形态（男性和女性）的平均CI - IP与方形牙弓形态（男性和女性）的平均CI - IP进行比较时，卵形牙弓形态的平均CI - IP大于方形牙弓形态，差异具有极显著性（=0）。
