J Korean Assoc Maxillofac Plast Reconstr Surg.  2011 Jul;33(4):331-336.

Comparative Analysis of the Reference Lines on McNamara's and Delaires Analyses for the Anterior and Posterior Facial Relationship of Maxillofacial Deformity

• Chung SW
• Kim S
• Byun SS
• Park HS
• Jung YS

Abstract

PURPOSE
McNamara and Delaire analyses are two commonly used analytic methods, yet, they differ in their theoretic concepts and different reference lines are used for ideal surgical prediction. Therefore, the use of different analytic methods may result in different surgical plans. The purpose of this study was to compare the anterior and posterior relationship of the maxilla and mandible by using McNamara and Delaire analysis.
METHODS
30 Korean patients (15 male and 15 female) who had visited the Department of Oral and Maxillofacial Surgery, College of Dentistry, Yonsei University, for dentofacial evaluation were studied by using McNamara's and Delaire's analyses.
RESULTS
On the maxillary analysis, 26 out of 30 patients (86.7%) were in accordance. On the mandibular analysis, 20 out of 30 patients (66.7%) were in accordance. On the maxillary analysis, McNamara's analysis showed an average of 0.36 mm greater amount of prognathism compared to Delaire's analysis, and this was not statistically significant. On the mandibular analysis, McNamara's analysis showed an average of 6.03 mm greater amount of prognathism compared to Delaire's analysis, and this was statistically significant. On the mandibular analysis, 26 out of 30 patients (86.7%) showed a greater amount of prognathism on McNamara's analysis compared to that of Delaire's analysis. The remaining 4 patients (13.3%) showed the same amount of prognathism on both analyses.
CONCLUSION
These results may serve as a reference for surgeons when determining which analytic method is to be used for optimal surgical results.

Keyword

McNamara analysis; Delaire analysis

MeSH Terms

Congenital Abnormalities
Dentistry
Humans
Male
Mandible
Maxilla
Prognathism
Surgery, Oral