Posttreatment stability of an anterior open-bite by molar intrusion compared with 2-jaw surgery - a retrospective study.
Clin Oral Investig
; 26(11): 6607-6616, 2022 Nov.
Article
en En
| MEDLINE
| ID: mdl-35821135
ABSTRACT
OBJECTIVES:
This study aimed to compare post-treatment stability in patients with anterior open-bite (AOB) between those treated surgically (orthognathic 2-jaw surgery) and non-surgically (molar intrusion using orthodontic miniscrews). MATERIALS ANDMETHODS:
All subjects had initial overbite (OB) < -1 mm and lateral cephalograms taken before treatment (T0), immediately after AOB correction (T1), after orthodontic treatment (T2), and at least 1 year after treatment (T3). The non-surgical group was enrolled retrospectively; then, the surgical group was matched by OB, sex, and age to the non-surgical group (n = 21 each). Changes in cephalometric measurements during treatment (T1-T0), finishing (T2-T1), and retention (T3-T2) periods were compared between two groups.RESULTS:
OB increased by 4.5-5.1 mm during the treatment period with 3.3 mm upward movement of the maxillary first molar (U6) in both groups. Changes in OB were not significantly different between the groups 0.5-0.9 mm increase during the finishing period but 1.0 mm decrease during the retention period (P > 0.05). U6 moved 0.5 mm downward in non-surgical group and 0.1 mm upward in the surgical group during the finishing period, and 1.0 mm and 0.4 mm downward in the non-surgical and surgical groups, respectively, during the retention period.CONCLUSIONS:
Post-treatment stability of AOB was similar for surgical and non-surgical methods (76.8 - 78.7%), although U6 moved more downward in the non-surgical group than in the surgical group. CLINICAL RELEVANCE AOB without severe skeletal deformity can be treated by either molar intrusion or orthognathic surgery with similar treatment outcome and stability.Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Mordida Abierta
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Métodos de Anclaje en Ortodoncia
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Procedimientos Quirúrgicos Ortognáticos
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Sobremordida
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Maloclusión Clase II de Angle
Tipo de estudio:
Observational_studies
Límite:
Humans
Idioma:
En
Revista:
Clin Oral Investig
Asunto de la revista:
ODONTOLOGIA
Año:
2022
Tipo del documento:
Article