scholarly journals Variations in orthodontic treatment planning decisions of Class II patients between virtual 3-dimensional models and traditional plaster study models

2006 ◽  
Vol 130 (4) ◽  
pp. 485-491 ◽  
Author(s):  
Joshua L. Whetten ◽  
Philip C. Williamson ◽  
Giseon Heo ◽  
Connie Varnhagen ◽  
Paul W. Major
1996 ◽  
Vol 23 (4) ◽  
pp. 359-365 ◽  
Author(s):  
A. A. Parfitt ◽  
W. P. Rock

A group of 30 general dental practitioners were asked to plan treatment for a series of 10 Class II division 1 malocclusions of graded severity. The results were assessed against a gold standard provided by three consultants. Only 14 per cent of practitioner treatment plans agreed with the gold standard and agreement was worst for those cases requiring the use of headgear. When consultants and General Dental Practitioners (GDPs) were asked whether a case should be referred for advice before the GDP began treatment, 64 per cent of GDP decisions agreed with those of the consultants. On 13 per cent of occasions, however, the GDP would have initiated incorrect treatment without seeking consultant advice.


2018 ◽  
Vol 12 (1) ◽  
pp. 296-302
Author(s):  
Irina Stupar ◽  
Enver Yetkiner ◽  
Daniel Wiedemeier ◽  
Thomas Attin ◽  
Rengin Attin

Background:Lateral Cephalometric Radiographs (LCR) are a common decision-making aid in orthodontic treatment planning and are routinely used in clinical practice. The aim of this present study was to test the null hypothesis that LCR evaluation does not alter specific components of orthodontic treatment planning in Class II patients.Materials and Methods:Records of 75 patients, who had been treated at the Department of Orthodontics, Centre of Dental Medicine, University of Zurich comprised the study material. Inclusion criteria were: (1) adolescents between the age of 12-15, (2) permanent dentition with Class II buccal segment relationship (3) absence of craniofacial and dento-alveolar malformations. Fifteen orthodontists from the dental faculties of Istanbul University, Istanbul and Ege University, Izmir filled out Likert-type linear scale questionnaires without knowing that they would repeat the same procedure with and without LCRs at two different time points. Equivalence and clinical relevance were assessed using (%95 CI) Wilcoxon signed rank tests.Results:Extraction decision did not differ between groups (p=0.68). Preference of functional appliance use (p=0.006) and inter-maxillary fixed functional appliance (p=0.043) was different among groups.Conclusion:LCR evaluation has minor influence on treatment planning procedure of Class II patients. It might be beneficial to consider its prescription not in a routine manner but as a supplementary tool considering possible reduction of radiation exposure.


1999 ◽  
Vol 2 (2) ◽  
pp. 79-84 ◽  
Author(s):  
R. Lee ◽  
T. MacFarlane ◽  
K. O'Brien

2021 ◽  
Author(s):  
Hong Liu ◽  
Xun Xi ◽  
Dongxu Liu

Abstract Backgroud: The apllication of Class II elastic can induce the rotation of mandible and condylar response. The purpose of this study was to assess the positional and morphological alterations of mandible after orthodontic treatment with Class II elastic by using of 3-dimensional superimposition of pretreatment (T1), posttreatment (T2) and after retention (T3) CBCT data. Methods: With sequential 3D superimpositions that combined cranial base superimpositions with regional mandibular superimpositions, the virtual reference mandibles were placed to distinguish morphological changes from positional changes. The morphological changes and positional changes of mandibles were measured by comparing multiple combinations of reference and original mandibles respectively, and the corresponding paired t test was performed using SPSS (IBM SPSS version 23). Results: During orthodontic treatment (T1-T2), the mandibular molars were extruded, and the condyles were revealed apparent adaptive remodeling and upward/backward displacements. The mandible rotated backwardly and drifted backwardly/downwardly. The condylar growth and displacements were significantly different. The condylar growth did not induce isometric displacements and the forward rotation was restricted. Two years after retention (T2-T3), continuous morphological and positional changes occurred. The condylar remodeling and forward/downward displacements induced forward mandibular rotation and neutralized the backward rotation during treatment period (T1-T2). The overall positional changes (T1-T3) were translations with slight rotation. Statistically significant differences were found between the treatment and overall variables regarding the 3D rotation, condylar displacement, Pog displacement. And with the continuous morphological and positional changes, the condyle moved back to the initial position after the retention stage.Conclusion: Conclusions: the sequential 3D superimposition method can produce the reference mandibles and distinguish the morphological changes from positional alterations. The class II elastics induced mandibular complex changes including condylar adaptive remodeling and 3D rotation and translation. The condyles morphologically adapted to resist the rotation effects of Class II elastic.


2014 ◽  
Vol 85 (3) ◽  
pp. 501-509 ◽  
Author(s):  
Camila Pachêco-Pereira ◽  
Graziela De Luca Canto ◽  
Paul W. Major ◽  
Carlos Flores-Mir

ABSTRACTObjective: To determine in which clinical scenarios digital models are valid as replacements for plaster models during orthodontic treatment decision-making process and treatment planning.Materials and Methods: An attempt to identify all pertinent published information was made. Retained articles were those where a decision-making process leading to differential orthodontic treatment plans based on either method were compared. The search was tailored for PubMed and adapted for EMBASE, MEDLINE, the Cochrane Library, LILACS, and Web of Science. A partial grey literature search was conducted through Google Scholar. References lists of the included articles were screened for potential relevant studies. The methodology of selected studies was evaluated using the Quality Assessment Tool for Diagnostic Accuracy Studies (QUADAS).Results: Only two studies were finally selected for the qualitative and quantitative synthesis. QUADAS results scores from selected studies ranged from 61% to 83% of 11 items evaluated. In one, the overall treatment plan regarding orthognathic surgery for Class II malocclusion changed in 13% to 22% of the cases. In the other one, 6% of the orthodontic treatment plans changed.Conclusion: Digital models could be used to replace plaster models in Class II malocclusion treatment planning.


2021 ◽  
pp. 105566562110628
Author(s):  
Kathryn Preston ◽  
Sanjay M. Mallya

Background Imaging findings are central to the diagnosis and treatment planning decisions when managing craniofacial differences. However, limited information is published on protocols for systematic cleft imaging assessment and for effective communication of these findings. Solution A template is presented to help guide radiologic imaging reports to acquire the relevant clinical information needed to manage patients with alveolar cleft.


2012 ◽  
Vol 3 (2) ◽  
pp. 136-140
Author(s):  
Lalita G Nanjannawar ◽  
Jiwan Asha Agrawal ◽  
Manish Agrawal

ABSTRACT The aim of this study was to analyze the malocclusion pattern among patients who visited Department of Orthodontics of BVU Dental College and Hospital, Sangli (Maharashtra) as a baseline data for proper treatment planning, teaching and further research. Materials and methods This study was conducted on 125 patients who attended the orthodontic department from December 2008 to June 2010. Information regarding age, sex, type of malocclusion, dentofacial patterns and dentofacial characteristics was obtained from patients records. Orthodontic treatment need was assessed using DHC component of IOTN. Results The results of the study showed that the patients age ranged from 10 to 33 years with mean age of 16 years 9 months (+ 3.92). There were 91 (72.8%) females and 34 (28.2%) males. Chief complaints of majority of patients were ‘upper front teeth forward’ and ‘irregular teeth’. The commonest type of malocclusion was Angle's class II which was seen in 60 (48%) of patients. There was an increased overjet in 81% of subjects. Statistically significant association was found between skeletal and Angle's classes (p < 0.01). Assessment of need for orthodontic treatment using the DHC component of IOTN showed that 59 (47.2%) were in great need of orthodontic treatment and 53 (42.4%) had definite need of treatment. Conclusion The results give a detailed pattern of malocclusion in orthodontic patients and may provide a baseline data for research and planning orthodontic services. How to cite this article Nanjannawar L, Agrawal JA, Agrawal M. Pattern of Malocclusion and Treatment Need in Orthodontic Patients: An Institution-based Study. World J Dent 2012;3(2):136-140.


2021 ◽  
Vol 20 (1) ◽  
pp. 212-215
Author(s):  
Ahmed Ali Alfawzan ◽  
Mohammad Khursheed Alam

Background: Proper diagnosis and treatment planning are the first steps in management of bilateral impacted maxillary canines (BIMC). Case Presentation: A 14 years old Saudi female patient with Class II subdivision right molar relationship and BIMC managed by comprehensive orthodontic treatment. Conclusion: A well-balanced occlusion by orthodontic management of the case has been done. Bangladesh Journal of Medical Science Vol.20(1) 2021 p.212-215


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