ArticleThe Angle orthodontist2020
Is there a relationship between mandibular cortical bone thickness and orthodontic treatment time?
Article in The Angle orthodontist, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
8 citing papers in PubMed, 1 synthesis or guideline pooled it, 14 citations in OpenAlex.
- The efficacy and safety of corticotomy and periodontally accelerated osteogenic orthodontic interventions in tooth movement: an updated meta-analysis.Head & face medicine · 2024Pooled it
- Biomechanical effects of various occlusal conditions and orthodontic force levels on mandibular canine distalization: a finite element analysis.Scientific reports · 2026Article
- Patient-associated and treatment-related predictive factors influencing the duration of orthodontic treatment with fixed appliances.The Angle orthodontist · 2026Article
- Assessment of collum angle and alveolar bone plate thickness relative to tooth inclination in central incisors using CBCT: a retrospective cross-sectional study.BMC oral health · 2026Article
- Artificial intelligence-powered prediction of orthodontic treatment duration: Identifying short and prolonged cases from a dataset of more than 10,000 patients.Journal of orthodontic science · 2026Article
- Comparison of total treatment duration with hybrid pendulum and buccal interradicular miniscrew supported maxillary molar distalization mechanics: a retrospective study.BMC oral health · 2025Article
- Comparison of two micro-osteoperforation protocols using mini-screws on the rate and type of extraction space closure: A randomized clinical trial.Dental research journal · 2025Article
- Effectiveness of surgical procedures in the acceleration of orthodontic tooth movement: Findings from systematic reviews and meta-analyses.The Japanese dental science review · 2022Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesTo determine whether there was a correlation between patients' bone thickness and time spent in orthodontic treatment. The secondary aim was to study the influence of Angle classification, extraction treatment, and age on overall treatment duration. MATERIALS AND
methodsIn this retrospective study, records of 971 orthodontic patients from two centers were reviewed and 500 subjects were included after imposing inclusion/exclusion criteria. The Mental Index was used to determine patients' bone density. For the Mental Index, a line perpendicular to the inferior border of the mandible was drawn on a panoramic radiograph so that it intersected the inferior border of the mental foramen. The mandibular cortical thickness was measured along this line. Two-sample t-test or a chi-square test, followed by multiple linear regression, were used to identify the factors affecting treatment duration.
resultsMandibular cortical thickness was negatively associated with treatment time for all subjects (P < .05). After adjusting for covariables, it remained significant for center-1, but non-significant for center-2 subjects. Angle Class II and Class III malocclusion, extraction therapy, and age had significant positive correlations with treatment duration (P < .05).
conclusionsThere is a negative correlation between the mandibular cortical thickness and orthodontic treatment duration. An extraction treatment plan and treatment of Angle Class II and Class III malocclusions significantly increase the duration of orthodontic treatment. Additionally, patients over 12 years of age have shorter treatment times compared to patients under 12 years of age.
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