The relationship of maxillary canines to the facial anatomical landmarks in a group of Thai people

Abstract

PURPOSEThe objective was to evaluate canine positions, intercanine tip width (ICTW) and width of distal surface of canine (WDC), related to facial landmarks including interalar width (IAW), intercommissural width (ICoW), and distance between left and right projection lines drawn from inner canthus of eyes to alae of the nose (DPICa) in a group of Thai.MATERIALS AND METHODSOne hundred Thai subjects aged 18-35 years were selected. IAW and ICoW were measured on subject's face using digital vernier caliper. Irreversible hydrocolloid impression of the upper arch was taken, and a cast was poured with dental stone. Silicone impression material was used to take imprint of the incisal edge of upper six anterior teeth. DPICa was obtained from the subject's face using custom-made measuring equipment and marked on the silicone incisal imprint. The marks were then transferred from the imprint to the stone cast and measured with digital caliper. The ICTW and WDC were also measured on the stone cast. Pearson's correlation was used to determine the correlation.RESULTSThe results revealed that the correlation between ICTW-ICoW was 0.429 and ICTW-DPICa was 0.573. The correlation between WDC-ICoW was 0.426 and WDC-DPICa was 0.547. However, IAW did not show any correlation with ICTW or WDC (P>.05).CONCLUSIONThe correlation between canine position and facial landmarks was found. ICTW and WDC had relationship with ICoW and DPICa. DPICa showed stronger correlation with the position of maxillary canine than that of ICoW.

Determination of Correlation of Width of Maxillary Anterior Teeth using Extraoral and Intraoral Factors in Indian Population: A Systematic Review

“…Discussions on this topic are present in the contemporary professional literature. [20][21][22][23][24][25][26][27][28] Reviews of the recent scientific literature reveal studies Graph 1: Measurement of IAD in various population groups that were carried out using different methodology and sample size, different face and natural teeth parameters, 8,[10][11][12][13]15,19,20 casts, 5,[16][17][18]21,22 or photographs, 5,14,16,17,20 as well as various types of gauge which make the comparison of results very difficult. The authors here used a variety of instruments to determine the measurements.…”

“…Therefore, correct selection of artificial teeth is essential to achieve a pleasant esthetic outcome. [6][7][8][9][10] The width of the maxillary anteriors is difficult to correlate with the facial measurements than the height of the maxillary anteriors. In addition, the generation approaching 70 years of age recognizes that maintaining their natural dentition improves appearance and smile and serves as a visible sign of successful aging.…”

Evaluation of the Current Techniques and Introduction of a Novel Approach for Estimating Maxillary Anterior Teeth Dimensions

“…Kini and Angadi 21 suggested ICoW to be related to ICTW in a ratio of 1.35:1 when measured on a photograph. Sinavarat et al 22 also found it to be related to ICTW and intercanine distance from distal surface of canines in a straight line and suggested it to be used only as a tentative method. In this study, the mean ICoW was found to be 51.7 mm ranging from 40 to 99 mm.…”

Correlation between interalar width and intercommisural width against mesiodistal width of central upper incisor in Buginese tribe

“…Selection and preparation of artificial teeth depend on various factors. 20 When there is no pre-extraction record, selection of the size and shape of artificial teeth will be difficult. Landmark of facial anatomy and the oral cavity can be used as a guide in terms of the selection of artificial teeth.…”

“…Landmark of facial anatomy and the oral cavity can be used as a guide in terms of the selection of artificial teeth. 17,20 Landmarks of facial anatomy include interalar width, intercommissural width, bizygomatic width, intercanthal width and interpupillary width. There are various different methods listed on some literature in the selection of the size of artificial teeth and there is no method that can last for long time and are used universally.…”