title: Airway space changes after maxillomandibular counterclockwise rotation and mandibular advancement with TMJ Concepts® total joint prostheses: three-dimensional assessment.
abstract: This study focused on three-dimensional (3D) airway space changes and stability following simultaneous maxillomandibular counterclockwise rotation, mandibular advancement, and temporomandibular joint (TMJ) reconstruction with custom-made total joint prostheses (TMJ Concepts(®)). Cone beam computed tomography (CBCT) scans of 30 consecutive female patients with irreversibly compromised TMJs were obtained at the following intervals: T1, presurgery; T2, immediately after surgery; and T3, at least 6 months after surgery. The CBCT volumetric datasets were analysed with Dolphin Imaging(®) software to evaluate surgical and postsurgical changes to oropharyngeal airway parameters. The average changes in airway surface area (SA), volume (VOL), and minimum axial area (MAA) were, 179.50 mm(2), 6302.60 mm(3), and 92.23 mm(2), respectively, at the longest follow-up (T3-T1) (P≤0.001). Significant correlations between the amount of mandibular advancement and counterclockwise rotation of the occlusal plane and 3D airway changes were also found (P≤0.01). The results of this investigation showed a significant immediate 3D airway space increase after maxillomandibular counterclockwise rotation and mandibular advancement with TMJ Concepts total joint prostheses, which remained stable over the follow-up period.
authors.affiliation: Orthodontics and Pediatric Dentistry Department, Faculdade de Odontologia de Araraquara, UNESP Universidade Estadual Paulista, Araraquara, São Paulo, Brazil. joaogonc2002@yahoo.com.br
authors.forename: J R
authors.initials: JR
authors.lastname: Gonçalves
authors.forename: L C R
authors.initials: LC
authors.lastname: Gomes
authors.forename: A P
authors.initials: AP
authors.lastname: Vianna
authors.forename: D B
authors.initials: DB
authors.lastname: Rodrigues
authors.forename: D A G
authors.initials: DA
authors.lastname: Gonçalves
authors.forename: L M
authors.initials: LM
authors.lastname: Wolford
mesh_terms: D000293:Adolescent; D000328:Adult; D001860:Bone Plates; D018786:Bone Substitutes / Q000627:therapeutic use; D016025:Bone Transplantation / Q000379:methods; D016302:Centric Relation; D002508:Cephalometry / Q000379:methods; D017076:Computer-Aided Design; D054893:Cone-Beam Computed Tomography / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D007595:Joint Prosthesis; D008334:Mandible / Q000473:pathology; D019186:Mandibular Advancement / Q000379:methods*; D008437:Maxilla / Q000473:pathology; D063166:Maxillary Osteotomy / Q000379:methods*; D008875:Middle Aged; D008953:Models, Anatomic; D009960:Oropharynx / Q000473:pathology*; D010347:Patient Care Planning; D011474:Prosthesis Design; D012189:Retrospective Studies; D012399:Rotation; D013704:Temporomandibular Joint / Q000601:surgery*; D013705:Temporomandibular Joint Disorders / Q000601:surgery; D055815:Young Adult
chemical_list: D018786:Bone Substitutes