American Journal of Orthodontics and Dentofacial Orthopedics
Original articleOrthodontists' perceptions of the need for orthognathic surgery in patients with Class II Division 1 malocclusion based on extraoral examinations
Section snippets
Material and methods
Ethical approval was approved by the Leeds East Ethics Committee (08/H1306/96), and research and development approval was granted from Leeds Teaching Hospitals NHS Trust, Bradford Teaching Hospitals NHS Foundation Trust, and York Teaching Hospitals NHS Trust in the United Kingdom.
The patients were drawn from new patient clinics in York District Hospital and Leeds Dental Institute. Forty patients were recruited with Class II Division 1 malocclusions exhibiting wide variations in degree of
Results
Of the 256 booklets sent, 208 were returned, giving a response rate of 81.3%. Of the 208 returned, 5 were incomplete with at least 1 piece of data missing. All returned booklets were included in the analysis. Of the booklets that were returned, 97% were fully completed.
Of the 208 (63%) consultants, 131 were male and 77 were female (37%). Information about the years that the consultants qualified as orthodontists was grouped and showed that the over 40% of them qualified between 1991 and 2000,
Discussion
Key soft-tissue profile values, indicating a possible need for orthognathic surgical treatment in patients with Class II Division 1 malocclusions, were identified (position of B-point, facial profile angle, and position of pogonion).
The more orthognathic patients a consultant orthodontist treats per year, the more likely he or she is to recommend surgery. Neither the sex nor the year of qualification of the consultant seemed to affect this decision.
The decision to take the photographs with the
Conclusions
- 1.
The photographic analysis in this study is a valid and reproducible method of assessing the patient's soft-tissue profile.
- 2.
The more orthognathic patients a consultant orthodontist treats per year, the more likely he or she is to recommend surgery. Neither the consultant's sex nor the year of qualification seemed to affect this decision.
- 3.
If soft-tissue B-point is more than or equal to −14.1 mm (95% CI, −21.3 to −9.2 mm) posterior to the true vertical through subnasale, then 80% of the consultant
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The authors report no commercial, proprietary, or financial interest in the products or companies described in this article.