Maxillofac Plast Reconstr Surg.
2017 Jun;39(6):15. 10.1186/s40902-017-0114-4.
Qualitative correlation between postoperatively increased vertical dimension and mandibular position in skeletal class III using partial-least-square path modeling
- Affiliations
-
- 1Department of Orthodontics, Pusan National University Hospital, Busan, South Korea. kimyongil@pusan.ac.kr
- 2Department of Management Information Systems, College of Business, Dong-A University, Busan, South Korea.
- 3Department of Statistics, College of Natural Science, Pusan National University, Busan, South Korea.
- 4Institute of translational dental sciences, Pusan National University, Busan, South Korea.
- 5Geumoro 20, Mulgeumeup, Yangsan 626-787 South Korea.
- KMID: 2388369
- DOI: http://doi.org/10.1186/s40902-017-0114-4
Abstract
- BACKGROUND
This study constructed a partial-least-square path-modeling (PLS-PM) model and found the pathway by which the postsurgical vertical dimension (VD) affects the extent of the final mandibular setback on the B point at the posttreatment stage for the skeletal class III surgery-first approach (SFA).
METHODS
This study re-analyzed the data from the retrospective study by Lee et al. on 40 patients with skeletal class III bimaxillary SFA. Variables were obtained from cone beam computed tomography (CBCT)-generated cephalograms. Authors investigated all variables at each time point to build a PLS-PM model to verify the effect of the VD on the final setback of the mandible.
RESULTS
From PLS-PM, an increase in VD10 was found to decrease the absolute value of the final setback amount of the mandible, which reflects the postsurgical physiological responses to both surgery and orthodontic treatment, which, in turn, can be interpreted as an increase in postoperative mandibular changes.
CONCLUSIONS
To resolve the issue of collinear cephalometric data, the present study adopted PLS-PM to assess the orthodontic treatment. From PLS-PM, it was able to summarize the effect of increased postsurgery occlusal vertical dimension on the increased changeability of the B point position at the posttreatment stage.
- Full Text Links
-
- Actions
-
Cited
- CITED
-
- Close
- Share
-
- Similar articles
-
- Evaluation of hyoid bone position and airway size in Class III malocclusion
- Prosthetic rehabilitation in a Class III malocclusion patient with increasing occlusal vertical dimension
- Correlation between skeletal and dental changes after mandibular setback surgery-first orthodontic treatment: Cone-beam computed tomography-generated half-cephalograms
- Changes of the hyoid bone position and the upper airway dimension after orthognathic surgery in skeletal class III patients
- A radiographic study of tongue posture at rest position and during the phonation of /s/ in Class III malocclusion
