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Influence of maxillary obturator prostheses on facial morphology in patients with unilateral maxillary defects.
J Prosthet Dent. 2015 Jan; 113(1):62-70.JP

Abstract

STATEMENT OF PROBLEM

Facial asymmetry is prominent with individuals with unilateral bone resorption and can lead to decreased quality of life.

PURPOSE

The purpose of this study was to investigate the influence of maxillary obturator prostheses on facial morphology of individuals with unilateral maxillary defects by using 3-dimensional digital stereophotogrammetry.

MATERIAL AND METHODS

The facial data of 8 participants with unilateral maxillary defects were acquired with a noncontact 3-dimensional digitizer, both with and without maxillary prostheses. The mid-facial plane was established by overlapping an original facial image with its mirror image. Displacement at 18 measurement points, including 7 bilateral pairs, was compared between the 2 sides, with and without the prostheses. Asymmetry indices of these 7 pairs also were calculated. Multivariate repeated-measures ANOVA was used to determine differences.

RESULTS

Displacements of the lateral and inferior points at the ala of the nose were significantly greater on the defect side than on the normal side. The distances between the ideal and defect side points at the superior ala, the upper lip, and the angle of the mouth decreased significantly with the prosthesis. No significant differences were found in asymmetry indices, but the angle of the upper lip line to the mid-sagittal plane increased significantly with the prosthesis.

CONCLUSIONS

The 3-dimensional analyzing method developed in this study can be useful in evaluating facial reconstruction with maxillary obturator prostheses with individuals with unilateral maxillary defects. The prostheses affect the region of the nasal ala, the upper lip, and the angles of the mouth.

Authors+Show Affiliations

Assistant Professor, Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan. Electronic address: s-hanawa@umin.ac.jp.Graduate student, Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan.Associate Professor, Maxillofacial Prosthetics Clinic, Tohoku University Graduate School of Dentistry, Sendai, Japan.Dean, Tohoku University Graduate School of Dentistry; and Professor, Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan.

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

25277030

Citation

Hanawa, Soshi, et al. "Influence of Maxillary Obturator Prostheses On Facial Morphology in Patients With Unilateral Maxillary Defects." The Journal of Prosthetic Dentistry, vol. 113, no. 1, 2015, pp. 62-70.
Hanawa S, Kitaoka A, Koyama S, et al. Influence of maxillary obturator prostheses on facial morphology in patients with unilateral maxillary defects. J Prosthet Dent. 2015;113(1):62-70.
Hanawa, S., Kitaoka, A., Koyama, S., & Sasaki, K. (2015). Influence of maxillary obturator prostheses on facial morphology in patients with unilateral maxillary defects. The Journal of Prosthetic Dentistry, 113(1), 62-70. https://doi.org/10.1016/j.prosdent.2014.06.016
Hanawa S, et al. Influence of Maxillary Obturator Prostheses On Facial Morphology in Patients With Unilateral Maxillary Defects. J Prosthet Dent. 2015;113(1):62-70. PubMed PMID: 25277030.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Influence of maxillary obturator prostheses on facial morphology in patients with unilateral maxillary defects. AU - Hanawa,Soshi, AU - Kitaoka,Aki, AU - Koyama,Shigeto, AU - Sasaki,Keiichi, Y1 - 2014/09/30/ PY - 2013/11/12/received PY - 2014/06/23/revised PY - 2014/06/23/accepted PY - 2014/10/4/entrez PY - 2014/10/4/pubmed PY - 2016/2/9/medline SP - 62 EP - 70 JF - The Journal of prosthetic dentistry JO - J Prosthet Dent VL - 113 IS - 1 N2 - STATEMENT OF PROBLEM: Facial asymmetry is prominent with individuals with unilateral bone resorption and can lead to decreased quality of life. PURPOSE: The purpose of this study was to investigate the influence of maxillary obturator prostheses on facial morphology of individuals with unilateral maxillary defects by using 3-dimensional digital stereophotogrammetry. MATERIAL AND METHODS: The facial data of 8 participants with unilateral maxillary defects were acquired with a noncontact 3-dimensional digitizer, both with and without maxillary prostheses. The mid-facial plane was established by overlapping an original facial image with its mirror image. Displacement at 18 measurement points, including 7 bilateral pairs, was compared between the 2 sides, with and without the prostheses. Asymmetry indices of these 7 pairs also were calculated. Multivariate repeated-measures ANOVA was used to determine differences. RESULTS: Displacements of the lateral and inferior points at the ala of the nose were significantly greater on the defect side than on the normal side. The distances between the ideal and defect side points at the superior ala, the upper lip, and the angle of the mouth decreased significantly with the prosthesis. No significant differences were found in asymmetry indices, but the angle of the upper lip line to the mid-sagittal plane increased significantly with the prosthesis. CONCLUSIONS: The 3-dimensional analyzing method developed in this study can be useful in evaluating facial reconstruction with maxillary obturator prostheses with individuals with unilateral maxillary defects. The prostheses affect the region of the nasal ala, the upper lip, and the angles of the mouth. SN - 1097-6841 UR - https://www.unboundmedicine.com/medline/citation/25277030/Influence_of_maxillary_obturator_prostheses_on_facial_morphology_in_patients_with_unilateral_maxillary_defects_ DB - PRIME DP - Unbound Medicine ER -