Long-term status of temporomandibular joint function and functional occlusion after orthodontic treatment

1980 ◽  
Vol 78 (2) ◽  
pp. 201-212 ◽  
Author(s):  
Cyril Sadowsky ◽  
Ellen A. BeGole
Keyword(s):  
Temporomandibular Joint ◽  
Orthodontic Treatment ◽  
Joint Function

scholarly journals Condylar Changes in Patients after Orthodontic Treatment - A Retrospective Panoramic Study from Chennai, India

2021 ◽  
Vol 10 (42) ◽  
pp. 3628-3632
Author(s):  
Deepigaa Manivasagam ◽  
Arvind Muthukrishnan
Keyword(s):  
Temporomandibular Joint ◽  
Orthodontic Treatment ◽  
Articular Surface ◽  
Hospital Setting ◽  
P Value ◽  
Dental Hospital ◽  
Long Term Follow Up ◽  
The Right

BACKGROUND Idiopathic condylar resorption (ICR) is a progressive, extensive loss of condylar resorption with or without temporomandibular joint (TMJ) symptoms. Orthodontic treatment causes abnormal joint loading, thus sustained physical stress to the articular surface of TMJ when exceeds adaptive capacity leads to dysfunctional remodelling of the mandible. Condylar changes were not assessed both during pre and post orthodontic treatment. The purpose of this study was to assess the condylar changes following orthodontic treatment using orthopantomogram (OPG). METHODS This retrospective study was conducted in a university dental hospital setting covering patients visiting for orthodontic treatment from October 2020 to February 2021. Analysis of pre-operative and post-operative OPG’s of patients who have undergone orthodontic treatment was done. Morphologic changes of condyle were recorded using idiopathic condylar resorption subgroups classification. The statistical software used for analysis was IBM Statistical Package for Social Sciences (SPSS 23) and a paired t test was used to assess the pre-operative and postoperative condylar changes. RESULTS 50 condyles of 25 patients (right and left side) ranging from 11 - 40 years of age were evaluated pre and post orthodontic treatment. Female predilection (60 %) with phenotype 1 (44 % - right; 44 % - left) being more common and left condyle most commonly affected. The mean and S.D. of the right side were - 680 and 0.748 respectively (P value 0.000) and left side values were - 800 and 1.118 respectively which was also statistically significant (P value 0.002). CONCLUSIONS ICR is the result of many predisposing and contributory factors and an accurate and timely diagnosis of this pathology is essential in dental practice. The available literature confirms the presence of condylar changes after orthodontic therapy, however more evidence-based high-quality clinical trials with detailed design and long-term follow-up periods need to be conducted yet in order to gain more insight and knowledge on the onset and progression of this pathology. KEY WORDS Idiopathic Condylar Resorption (ICR), Temporomandibular Joint (TMJ), Orthodontic Treatment

scholarly journals Long-term Follow-up of Craniofacial Alterations in Juvenile Idiopathic Arthritis

2009 ◽  
Vol 79 (6) ◽  
pp. 1057-1062 ◽  
Author(s):  
Marinka Twilt ◽  
Alcuin J. M. Schulten ◽  
Birte Prahl-Andersen ◽  
Lisette W. A. van Suijlekom-Smit
Keyword(s):  
Juvenile Idiopathic Arthritis ◽  
Temporomandibular Joint ◽  
Initial Study ◽  
Study Cohort ◽  
Craniofacial Skeleton ◽  
Lateral Cephalograms ◽  
Long Term Follow Up ◽  
Angular Measurements

Abstract Objective: To investigate changes in the craniofacial skeleton in relation to the changes in condylar alterations that occur during long-term follow-up in patients with juvenile idiopathic arthritis. Materials and Methods: Temporomandibular joint (TMJ) involvement is defined as a condylar alteration that is observed on the orthopantomogram. Lateral cephalograms were used to determine linear and angular measurements. Results: Seventy of 97 patients from the initial study cohort were included, with a mean follow-up of 68 months. The overall prevalence of condylar alterations and posterior rotation of the mandible decreased; however, the prevalence of retrognathia remained the same. Patients showed improvement in the degree of retrognathia and posterior rotation (40% ANB, 51% OP-SN, and 44% GO-GN-SN). Improvement in the degree of retrognathia was seen more often in patients with improved condylar alterations than in patients with persistent alterations and in those without alterations (50%, 33%, and 28%, respectively). The degree of posterior rotation improved almost equally in patients without TMJ involvement and in patients with improved condylar alterations (57% and 50% by OP-SN, and 67% and 38% GO-GN-SN, respectively) and did not improve in patients with stable persistent alterations. Conclusion: Both condylar and craniofacial alterations can improve in patients with juvenile idiopathic arthritis.

scholarly journals Another way of looking at treatment stability

2016 ◽  
Vol 86 (5) ◽  
pp. 721-726 ◽  
Author(s):  
Kaoutar Zinad ◽  
Annemie M.W.J. Schols ◽  
Jan G.J.H. Schols
Keyword(s):  
Orthodontic Treatment ◽  
Treatment Initiation ◽  
Peer Assessment ◽  
Treated Group ◽  
Class I ◽  
Physiological Changes ◽  
Treatment Responses ◽  
Study Participants ◽  
Gender Specific

ABSTRACT Objective:  To determine the contribution of normal physiological changes to the overall manifestation of a relapse after orthodontic treatment. We analyzed long-term changes in the dentition of patients with Class I malocclusions after orthodontic treatment compared with a representative group with untreated Class I malocclusions. Materials and Methods:  Study participants (n  =  66; mean age, 12 years at treatment initiation) were treated for Class I malocclusions. Dental changes were evaluated at 2, 5, 10, and 15 years after treatment. Control participants (n  =  79) had untreated Class I malocclusions (n  =  53 evaluated at ages 12 and 22 years; n  =  26 evaluated at ages 19 and 39 years). Dental changes were evaluated with the Peer Assessment Rating (PAR) index. Results:  In untreated and treated groups, PAR scores increased over time with gender-specific changes. In the untreated groups, the PAR score significantly increased in male participants between the ages of 12 and 22 years (P  =  .04) and in female participants between the ages of 19 and 39 years (P  =  .001). In the treated group, early posttreatment changes were primarily related to the initial treatment response. Later changes in the PAR score could be attributed to physiological changes, with the same gender-specific changes as those observed in the untreated group. Conclusions:  The pattern of physiological changes in dentition for participants between the ages of 12 and 39 was different between sexes. Females showed more relapse than males between 10 and 15 years posttreatment. This distinction should be considered when evaluating long-term orthodontic treatment responses.

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