Mesiodistal dental movement toward remodeled edentulous alveolar ridge: Digital model assessment

Herrera, Francyle Simões; Santos, Patrícia Bittencourt Dutra dos; Ferreira, Marcos Cezar; Freitas, Karina Maria Salvatore de; Henriques, José Fernando Castanha; Janson, Guilherme; Garib, Daniela Gamba

doi:10.1016/j.ajodo.2016.11.025

Cited by 3 publications

(2 citation statements)

References 16 publications

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“…However, women had an average of 1.37 missing molars, while for men the average was 0.57. These data corroborate with previous reports that observed a higher frequency of extraction of first molars in women than in men [ 11 ]. In multivariate analysis, the tooth loss makes the gender effect insignificant, a confounding variable ( p = 0.875), confirming data from previous studies in patients without loss.…”

Section: Discussionsupporting

confidence: 93%

“…Another consequence of loss is alveolar ridge atrophy, which may make orthodontic movement difficult. In patients who required mesiodistal tooth movement in edentulous alveolar ridges, a mean treatment time of 1.54 years until space closure and 1.44 years until space opening was reported [ 11 ], suggesting that there is no difference between these two treatment options. However, the impact of these mechanics on the total time of orthodontic treatment has not been evaluated.…”

Section: Introductionmentioning

confidence: 99%

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The impact of the loss of first permanent molars on the duration of treatment in patients treated with orthodontic space closure and without skeletal anchorage

Cardoso¹,

Mecenas²,

Normando

2022

Prog Orthod.

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Background This study aims to evaluate the impact of the loss of permanent molars on the duration of orthodontic treatment for space closure and without skeletal anchorage. Methods Records at the beginning (T0) and the end (T1) of orthodontic treatment were selected retrospectively. Patients were divided into two groups: loss of molar (n = 19) and control, without loss (n = 24). The impact of loss on treatment time was assessed using multiple linear regression adjusted for the number of absences, bonding failures, age, sex, PAR index at T0 and T1 at p<0.05. Treatment time was also evaluated by the number of losses and which arches were involved (upper, lower). The systematic and random errors for the PAR index were verified using the intraclass correlation coefficient (ICC) and the Dahlberg formula, respectively. Results A small random error (1.51) and excellent replicability (ICC = 99.6) were observed. Overall average treatment time was 22.5 months (± 7.95) for the group without loss and 44.7 months (± 17.3) with a loss. Treatment time was longer in cases where there was a higher number of missing molars and when both arches were involved. In addition to the loss (β = 4.25, p < 0.001), the number of missed appointments (β = 2.88, p < 0.001) had a significant effect and increased treatment time. Bonding failures, gender, age, and PAR index at T0 and T1 were not significantly associated with treatment time in the multivariate model (p > 0.05). Conclusion Loss of the first permanent molar has a negative impact on orthodontic treatment time in cases of space closure. The treatment time is longer when there are more tooth losses and arches involved. Treatment time also increases with greater numbers of missed clinical appointments.

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Section: Discussionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

The impact of the loss of first permanent molars on the duration of treatment in patients treated with orthodontic space closure and without skeletal anchorage

Cardoso¹,

Mecenas²,

Normando

2022

Prog Orthod.

View full text Add to dashboard Cite

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Alveolar bone loss and root resorption in mesialized second molars in mandibular first molar extraction cases as compared to contralateral non-extraction side in young adults: A retrospective cross-sectional study

Aman

Jeelani

Ahmed

et al. 2023

International Orthodontics

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Periodontal status of maxillary central incisors after orthodontic traction: a longitudinal follow-up

et al. 2022

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The aim of this study was to evaluate the clinical and radiographic periodontal status of impacted permanent maxillary central incisors (Mx.1) after a long term of orthodontic traction. Methodology: This split-mouth study evaluated a sample of 11 patients (five females, six males) treated with Mx.1 unilateral traction one to 28 years after the removal of orthodontic appliances. The traction Group (TG) consisted of 11 Mx.1 and the Comparison Group (CG) comprised 11 spontaneously erupted contralateral Mx.1. Highresolution CBCT exams of central incisors were performed using Accuitomo (J. Morita, Kyoto, Japan). Cross-section imagens passing through the center of maxillary central incisors were used to measure buccal and lingual alveolar bone level. Presence of fenestration, root dilacerations, root coverage, and position of the root apex were also assessed in the same images. Clinical parameters included periodontal probing depth, attachment level, gingival bleeding index, plaque index, degree of gingival recession, amount of gingival mucosa, and evaluation of interproximal papilla and black triangle. Digital model analysis included an assessment of clinical crown height and width.Intergroup comparisons were performed using paired t-, McNemar's, and Wilcoxon tests (p<0.05). Results: Compared to CG, we found a significantly thinner labial bone plate thickness in TG at the middle (p=0.000) and apical (p=0.009) root level. We also observed an apical displaced labial bone crest level in TG (p=0.000). The Traction Group showed a greater frequency of root dilacerations and gingival recessions, a decreased amount of keratinized mucosa, and a decreased clinical attachment level at the labial aspect compared to contralateral teeth. Conclusions: A decreased thickness and height of labial alveolar bone and gingival recessions were found in maxillary central incisors 15 years after orthodontic traction. Though incisor traction might cause some periodontal impact, differences are acceptable under a clinical point of view considering the cost-benefit ratio.

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Mesiodistal dental movement toward remodeled edentulous alveolar ridge: Digital model assessment

Cited by 3 publications

References 16 publications

The impact of the loss of first permanent molars on the duration of treatment in patients treated with orthodontic space closure and without skeletal anchorage

The impact of the loss of first permanent molars on the duration of treatment in patients treated with orthodontic space closure and without skeletal anchorage

Alveolar bone loss and root resorption in mesialized second molars in mandibular first molar extraction cases as compared to contralateral non-extraction side in young adults: A retrospective cross-sectional study

Periodontal status of maxillary central incisors after orthodontic traction: a longitudinal follow-up

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