Occlusal changes in orthodontically treated subjects 40 years after treatment and comparison with untreated control subjects

Freitas, Karina Maria Salvatore de; Massaro, Camila; Miranda, Felicia; Freitas, Marcos Roberto de; Janson, Guilherme; Garib, Daniela Gamba

doi:10.1016/j.ajodo.2020.05.027

Cited by 17 publications

(15 citation statements)

References 45 publications

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“…Various studies have been conducted on the dimensions of individual components of face and its impact on facial beauty. These components include lip profile [8], lip thickness [9], over jet [10], gingival contour [11] and anterior teeth alignment [12]. Premolar extraction and its impact on facial aesthetics is a controversial subject.…”

Section: Discussionmentioning

confidence: 99%

Comparative analysis of mandibular changes after orthodontic treatment with and without extraction of four premolars: A digital cephalometric study

Alex

Shashidhar

Kuttappa

et al. 2022

Acta Marisiensis - Seria Medica

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Objective: To compare and evaluate the cephalometric hard and soft tissue changes of mandible after orthodontic treatment with and without extraction of four first premolar. Methodology: 60 individuals with Class I skeletal pattern were selected as per inclusion criteria. They were divided into two groups: 30 in the extraction group and 30 in the non-extraction group. Each group consists of 15 males and 15 females. Pre-treatment and post-treatment lateral cephalograms of the selected subjects were obtained, analysed and compared to assess the changes might have occurred. Descriptive statistics of the explanatory and outcome variables were calculated by mean and standard deviation for quantitative variables. Paired t test was applied to check the statistical difference of pre-treatment and post-treatment cephalometric parameters within the group (Extraction and non-extraction). Unpaired t test was used to check the statistical difference between extraction and non-extraction groups. The level of significance is set at 5%. Results: B point moved backward with lower incisor retraction. N-A-Pog shows a statistically significant decrease in the extraction group (P=0.003). B-NP shows a statistically significant decrease in extraction group (P=0.001). N- A’-Pog’ shows a statistically significant increase in non-extraction group (P=0.046). Soft tissue thickness in chin increases in extraction group and decreases in non-extraction group. Conclusion: The results indicate that premolar extraction will have a flattening effect on the midface. With proper diagnosis and treatment planning, premolar extractions have high potential to improve the facial profile.

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Section: Discussionmentioning

confidence: 99%

Comparative analysis of mandibular changes after orthodontic treatment with and without extraction of four premolars: A digital cephalometric study

Alex

Shashidhar

Kuttappa

et al. 2022

Acta Marisiensis - Seria Medica

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“…9 Additionally, late anterior crowding is frequently reported as an expected maturational change of the occlusion in treated and untreated individuals. 8,9,62,63 With aging, incisor alignment is deteriorated even in untreated subjects presenting with no crowding in the adolescence. 8,9 These findings are more evident in the mandib- If no retainer is used in the mandible from adolescence to the sixties, there is a considerable risk that a deterioration in incisor alignment will be observed and become a later complaint.…”

Section: Clinical Implications Of Occlusion Agingmentioning

confidence: 99%

Normal occlusion in maturational life process

Garib

Miranda

Massaro

2022

Dental Press J. Orthod.

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Introduction: An increase in life expectancy was observed in the past years. Consequently, the knowledge of the maturational changes in the occlusion is highly important to guide clinicians during treatment planning. Objective: In this article, the occlusal and facial aging changes occurred during almost 50 years of follow-up are described. A normal occlusion sample from Bauru Dental School, University of São Paulo, Brazil, was evaluated at 13 (T1), 17 (T2) and 60 (T3) years of age. The maturational changes observed in digital dental models and cephalometric radiographs were presented. A revision of the aging process, under the gerontology and psychology perspectives, was also explored. Discussion: Maturational changes in non-treated individuals were very delicate. Mandibular crowding, decrease in the overbite, changes in the maxillary second molar position, increase in the clinical crown length, dental wear and discoloration were observed. Conclusion: Compared to the remarkable facial and skin changes during aging, the occlusion seems to be the most stable feature of the face during the aging process. Final considerations: An adequate oral care throughout lifetime makes the smile the best memory of youth at mature ages.

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“…Other factors that may affect these conditions include changes in the morphology of the teeth, early loss of permanent teeth that causes lingual collapse of the anterior teeth of the maxilla or mandible, the mesiodistal width of the anterior teeth, and the natural deepening of the bite due to aging [ 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

The Effects of Intrusion of Anterior Teeth by Skeletal Anchorage in Deep Bite Patients; A Systematic Review and Meta-Analysis

et al. 2023

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Background: Deep bite is known as one of the most common malocclusions, and its treatment and retention are often challenging. The use of mini-screws has been suggested as an ideal method for the intrusion of incisors in deep-bite patients. Still, there are conflicting reports regarding the superiority of this method compared to other common treatments. Aim: The aim of this systematic review and meta-analysis was to evaluate the effects of the intrusion of anterior teeth by skeletal anchorage in deep bite patients. Methods: From the beginning to 15 September 2022, articles on the topic of interest were searched in electronic databases including PubMed, Web of Science, Scopus, EMBASE, and Cochrane’s CENTRAL. Additionally, a hand search for pertinent studies and a search of the grey literature were carried out. After the selection of eligible studies, data extraction was performed using piloted forms. Inverse-variance random-effects meta-analyses were used to combine the outcome measures of dental indices, skeletal cephalometric indices, and dental cephalometric indices. Results: A total of 15 studies (6 RCT; 9 CCT) were included in the systematic review and 14 were used in the meta-analyses. The differences in overbite changes (MD = −0.45, p = 0.04), true incisor intrusion [u1-pp] (MD = −0.62, p = 0.003) and molar extrusion [u6-pp] (MD = −0.40, p = 0.01) were statistically significant and TADs showed better treatment results than other intrusion methods (segmented intrusion arch, utility arch, J hook headgear). No significant differences regarding overjet, molar and incisor tipping, and skeletal indices between mini-screw and other intrusion methods could be found. Conclusion: The use of mini-screws leads to lower overbite and higher true intrusion (about 0.45 and 0.62 mm, respectively) compared to the use of other methods for intruding upper incisors. Furthermore, the effect of TAD on extrusion of molar teeth is less (by 0.4 mm) than other methods.

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Occlusal changes in orthodontically treated subjects 40 years after treatment and comparison with untreated control subjects

Cited by 17 publications

References 45 publications

Comparative analysis of mandibular changes after orthodontic treatment with and without extraction of four premolars: A digital cephalometric study

Comparative analysis of mandibular changes after orthodontic treatment with and without extraction of four premolars: A digital cephalometric study

Normal occlusion in maturational life process

The Effects of Intrusion of Anterior Teeth by Skeletal Anchorage in Deep Bite Patients; A Systematic Review and Meta-Analysis

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