Accuracy of maxillary positioning using computer-designed and manufactured occlusal splints or patient-specific implants in orthognathic surgery.
Clin Oral Investig
; 27(9): 5063-5072, 2023 Sep.
Article
in En
| MEDLINE
| ID: mdl-37382718
ABSTRACT
OBJECTIVE:
To determine the accuracy of maxillary positioning using computer-designed and manufactured occlusal splints or patient-specific implants in orthognathic surgery. MATERIAL ANDMETHODS:
A retrospective analysis of 28 patients that underwent virtually planned orthognathic surgery with maxillary Le Fort I osteotomy either using VSP-generated splints (n = 13) or patient-specific implants (PSI) (n = 15) was conducted. The accuracy and surgical outcome of both techniques were compared by superimposing preoperative surgical planning with postoperative CT scans and measurement of translational and rotational deviation for each patient.RESULTS:
The 3D global geometric deviation between the planned position and the postoperative outcome was 0.60 mm (95%-CI 0.46-0.74, range 0.32-1.11 mm) for patients with PSI and 0.86 mm (95%-CI 0.44-1.28, range 0.09-2.60 mm) for patients with surgical splints. Postoperative differences for absolute and signed single linear deviations between planned and postoperative position were a little higher regarding the x-axis and pitch but lower regarding the y- and z-axis as well as yaw and roll for PSI compared to surgical splints. There were no significant differences regarding global geometric deviation, absolute and signed linear deviations in the x-, y-, and z-axis, and rotations (yaw, pitch, and roll) between both groups.CONCLUSIONS:
Regarding accuracy for positioning of maxillary segments after Le Fort I osteotomy in orthognathic surgery patient-specific implants and surgical splints provide equivalent high accuracy. CLINICAL RELEVANCE Patient-specific implants for maxillary positioning and fixation facilitate the concept of splintless orthognathic surgery and can be reliably used in clinical routines.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Dental Implants
/
Surgery, Computer-Assisted
/
Orthognathic Surgical Procedures
/
Orthognathic Surgery
Type of study:
Observational_studies
Limits:
Humans
Language:
En
Journal:
Clin Oral Investig
Journal subject:
ODONTOLOGIA
Year:
2023
Document type:
Article
Affiliation country:
Alemania