Facial Asymmetry
Conditions
Keywords
computer-assisted orthognathic surgery; facial asymmetry
Brief summary
The specific aims of the study were to measure and compare the rates of alignment and cant reduction of the dental and facial midlines among the two groups.
Detailed description
The purpose of this randomized, controlled, clinical study, was to evaluate the most accurate procedure for orthognathic correction of facial asymmetry. The investigators compared two different methods of surgical planning: classical (esthetic analysis of the face, cephalometric study of the skull in lateral and posteroanterior cephalograms, analysis and surgical simulation of plaster casts mounted in semi-individual articulators, development of a surgical acrylic resin intermediate splint) and digital planning (cone-beam computed tomography, data acquisition, software-assisted virtual surgery -Maxilim; Medicim, Mechelen, Belgium- and CAD/CAM processing of the surgical intermediate splint).
Interventions
PROCEDUREclassic procedure of planning
analysis of pictures, 2D radiographs and aesthetics; model surgery and acrylic splint
PROCEDUREcomputer assisted orthognathic planning and surgery of asymmetric patients
Sponsors
Università degli Studi di Sassari
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)
Eligibility
Sex/Gender
ALL
Age
21 Years to 54 Years
Healthy volunteers
No
Inclusion criteria
* facial asymmetry or mandibular deviation (cant of the occlusal plane \> 3° and/or midline discrepancies \> 2.5 mm) * presence of all central incisors, * pre- and postoperative radiographs and plaster casts (group 1) * cranial CBCT images (group 2) * pre- and postoperative digital photographs.
Exclusion criteria
* previous trauma involving the hard or soft facial tissues * functional deviation of the mandible * incomplete records (CBCT, radiographs, casts or digital photographs).
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in linear measures | Preoperative (baseline)-Postoperative (up to 1 month) | More specifically were measured: distance from the upper interincisal point to the facial midline; distance from the lower interincisal point to the facial midline; distance between interincisal points; distance from skeletal menton to the facial midline; distance from soft tissue menton to the facial midline; |
| Change in angular measures | Preoperative (baseline)- Postoperative (up to one month) | More specifically were measured:distance from the maxillary sagittal plane to the facial mid-sagittal plane; distance from the mandibular sagittal plane to the facial mid-sagittal plane. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| age of patients | Preoperative (baseline) | age at surgery |
| Type of surgery needed | Preoperative (baseline) | How many patients had genioplasty added to the standard bimaxillary surgery plan |
| sample size | Preoperative (baseline) | number of patients |
| gender | Preoperative (baseline) | male/female |
Countries
Italy
Outcome results
None listed