Journal article
Treatment outcomes and short-term stability in adult anterior openbite patients treated with or without extractions: a National Dental Practice-Based Research Network study
The Angle orthodontist, Vol.95(2), pp.149-156
03/01/2025
DOI: 10.2319/070224-518.1
PMCID: PMC11842112
PMID: 39880009
Abstract
To investigate whether extractions in adult anterior openbite (AOB) patients lead to improved treatment outcomes and better short-term stability.OBJECTIVESTo investigate whether extractions in adult anterior openbite (AOB) patients lead to improved treatment outcomes and better short-term stability.Records of extraction (EXT) and nonextraction (NE) adult patients were identified from all patients treated with fixed appliances through the National Dental Practice-Based Research Network. Photographic Openbite Severity Index was used to assess treatment success and stability. Skeletal, dental, and soft tissue treatment outcomes were evaluated using cephalometric analysis.MATERIALS AND METHODSRecords of extraction (EXT) and nonextraction (NE) adult patients were identified from all patients treated with fixed appliances through the National Dental Practice-Based Research Network. Photographic Openbite Severity Index was used to assess treatment success and stability. Skeletal, dental, and soft tissue treatment outcomes were evaluated using cephalometric analysis.Pretreatment and posttreatment records were collected for 115 patients. Thirty-three were treated with extractions; 82 were treated without extractions. The EXT group was younger, more crowded, and had less previous orthodontic treatment. Success rate of AOB correction in the EXT group was slightly higher (97%) than the NE group (92%) but not statistically different. No significant differences were observed in skeletal outcomes. The EXT group exhibited more lingual tipping and posterior movement of maxillary and mandibular incisors and less extrusion of mandibular incisors. Dental changes in the EXT group were associated with increased nasolabial angle and lip retraction. The small number of patients with AOB relapse did not provide enough power to identify differences in stability between the two groups.RESULTSPretreatment and posttreatment records were collected for 115 patients. Thirty-three were treated with extractions; 82 were treated without extractions. The EXT group was younger, more crowded, and had less previous orthodontic treatment. Success rate of AOB correction in the EXT group was slightly higher (97%) than the NE group (92%) but not statistically different. No significant differences were observed in skeletal outcomes. The EXT group exhibited more lingual tipping and posterior movement of maxillary and mandibular incisors and less extrusion of mandibular incisors. Dental changes in the EXT group were associated with increased nasolabial angle and lip retraction. The small number of patients with AOB relapse did not provide enough power to identify differences in stability between the two groups.Orthodontists have high success correcting AOB with or without extractions. The EXT group displayed more retraction and lingual tipping of incisors as well as increased retraction of soft tissues. Stability of AOB closure was more than 90% for both groups after 1 year, with marginal increases in stability after extractions.CONCLUSIONSOrthodontists have high success correcting AOB with or without extractions. The EXT group displayed more retraction and lingual tipping of incisors as well as increased retraction of soft tissues. Stability of AOB closure was more than 90% for both groups after 1 year, with marginal increases in stability after extractions.
Details
- Title: Subtitle
- Treatment outcomes and short-term stability in adult anterior openbite patients treated with or without extractions: a National Dental Practice-Based Research Network study
- Creators
- Geoffrey M GreenleeJessica L CollinsBrian LerouxVeerasathpurush AllareddyCameron JolleyKyungsup ShinMichael VermetteGreg J HuangNational Dental PBRN Collaborative Group
- Resource Type
- Journal article
- Publication Details
- The Angle orthodontist, Vol.95(2), pp.149-156
- DOI
- 10.2319/070224-518.1
- PMID
- 39880009
- PMCID
- PMC11842112
- NLM abbreviation
- Angle Orthod
- ISSN
- 1945-7103
- eISSN
- 1945-7103
- Publisher
- E H ANGLE EDUCATION RESEARCH FOUNDATION, INC
- Grant note
- National Dental Practice-Based Research Network, NIDCR: U19-DE-22516, U19-DE-28717 University of Washington Department of Orthodontics Alumni Association
We gratefully acknowledge all the practitioners and patients who provided the sample for this work. Funding: This work was supported by The National Dental Practice-Based Research Network, NIDCR grants U19-DE-22516 and U19-DE-28717, and the University of Washington Department of Orthodontics Alumni Association.
- Language
- English
- Electronic publication date
- 01/30/2025
- Date published
- 03/01/2025
- Academic Unit
- Orthodontics; Craniofacial Anomalies Research Center
- Record Identifier
- 9984781276002771
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