Novel concept for posterior crossbite correction : Preliminary results.
J Orofac Orthop
; 2023 May 04.
Article
em En
| MEDLINE
| ID: mdl-37142772
ABSTRACT
PURPOSE:
The efficiency of dentoalveolar compensation involving both jaws for posterior crossbite correction using computer-aided design/computer-aided manufacturing (CAD/CAM) expansion and compression archwires was evaluated. Treatment outcome was tested against the null hypothesis that the transverse correction achieved would be significantly smaller than planned.METHODS:
This retrospective study included 64 patients (mean age 23.5 years, median 17.0, minimum/maximum 9.0/63.0, standard deviation 13.7) with uni- or bilateral posterior crossbite. In all consecutively debonded patients, expansion and/or compression archwires were used for dentoalveolar correction involving both jaws. Plaster casts prior to (T1) and following treatment (T2) with completely customized lingual appliances (CCLA) were compared with the treatment plan represented by an individual target set-up. The statistical analysis was carried out using the Schuirmann TOST (two one-sided ttests) equivalence test on the basis of a one-sample ttest with αâ¯= 0.025 to one side. The non-inferiority margin was set at δâ¯= 0.5â¯mm.RESULTS:
All posterior crossbites could be corrected by dentoalveolar compensation involving both jaws. The mean total correction achieved was 6.9â¯mm (mean maxillary expansion 4.3â¯mm/mean mandibular compression 2.6â¯mm) with a maximum of 12.8â¯mm. The transverse corrections achieved in both arches at T2 were equivalent to the planned corrections in the set-up (pâ¯< 0.001).CONCLUSION:
The results of this study indicate that CAD/CAM expansion and compression archwires can be an efficient tool to achieve the desired correction in patients with a posterior crossbite even in more severe cases.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Observational_studies
Idioma:
En
Revista:
J Orofac Orthop
Assunto da revista:
ODONTOLOGIA
/
ORTODONTIA
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
Alemanha
País de publicação:
ALEMANHA
/
ALEMANIA
/
DE
/
DEUSTCHLAND
/
GERMANY