J Adv Prosthodont.  2013 Nov;5(4):369-373. 10.4047/jap.2013.5.4.369.

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

• Sinavarat
• Anunmana C
• Hossain S

• KMID: 2176521
• DOI: http://doi.org/10.4047/jap.2013.5.4.369

Abstract

PURPOSE
The 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 METHODS
One 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.
RESULTS
The 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).
CONCLUSION
The 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.

Keyword

Complete denture; Canine; Canthus; Alae

MeSH Terms

Asian Continental Ancestry Group*
Colloids
Denture, Complete
Humans
Nose
Silicones
Tooth
Colloids
Silicones

Figure

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  Fig. 1 The silicone imprint of the incisal edges of maxillary anterior teeth and the occlusal surface of the premolar obtained from the stone cast.

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  Fig. 2 The equipment for marking the projection of the line drawn from inner canthus of the eye to alae of the nose (top view).

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  Fig. 3 The adjustable flag of the equipment touching the inner canthus of the eye and alae of the nose.

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  Fig. 4 Projection of the line was marked on the silicone imprint using a Roach wax carver.

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  Fig. 5 (A) The marks on the silicone imprint were transferred to the stone cast, (B) The straight-line distance between the two marks was determined.

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