Evaluation of Invisalign Treatment Effectiveness and Efficiency Compared with Conventional Fixed Appliances Using the Peer Assessment Rating (PAR) Index PDF Download
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Author: Jiafeng Gu
Publisher:
ISBN:
Category :
Languages : en
Pages : 40
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Book Description
Introduction: The purpose of this retrospective case-control study was to compare the treatment effectiveness and efficiency of the Invisalign system and conventional fixed appliances in treating orthodontic patients with mild to moderate malocclusion in a graduate orthodontic clinic. Methods: Using the peer assessment rating (PAR) index, we evaluated pretreatment and posttreatment records of 48 Invisalign patients and 48 fixed appliances patients. Those two groups of patients were controlled for general characteristics and initial severity of malocclusion. We analyzed treatment outcome, duration and improvement between the Invisalign and fixed appliances groups. Results: The average pretreatment PAR score (United Kingdom weighting) was 20.81 for Invisalign and 22.79 for fixed appliances (P = 1.0000). Posttreatment weighted PAR scores between Invisalign and fixed appliances were not statistically different (P = 0.7420). On average, Invisalign finished 5.7 months faster than fixed appliances (P = 0.0040). The weighted PAR score reduction with treatment was not statistically different between the Invisalign and fixed appliances groups (P = 0.4573). All cases in both groups had more than 30% reduction in PAR score. Logistic regression analysis indicates the odds of achieving "great improvement" in Invisalign group was only 0.329 times the odds of achieving “great improvement” in the fixed appliances group after controlling for age (P = 0.0150). Conclusions: Our data show that both Invisalign and fixed appliances were able to improve the malocclusion. Invisalign finished treatment faster than fixed appliances. However, it appears that Invisalign may not be as effective as fixed appliances in achieving "great improvement" in the malocclusion. This study might help clinicians to determine appropriate cases for Invisalign treatment.
Author: Jiafeng Gu
Publisher:
ISBN:
Category :
Languages : en
Pages : 40
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Book Description
Introduction: The purpose of this retrospective case-control study was to compare the treatment effectiveness and efficiency of the Invisalign system and conventional fixed appliances in treating orthodontic patients with mild to moderate malocclusion in a graduate orthodontic clinic. Methods: Using the peer assessment rating (PAR) index, we evaluated pretreatment and posttreatment records of 48 Invisalign patients and 48 fixed appliances patients. Those two groups of patients were controlled for general characteristics and initial severity of malocclusion. We analyzed treatment outcome, duration and improvement between the Invisalign and fixed appliances groups. Results: The average pretreatment PAR score (United Kingdom weighting) was 20.81 for Invisalign and 22.79 for fixed appliances (P = 1.0000). Posttreatment weighted PAR scores between Invisalign and fixed appliances were not statistically different (P = 0.7420). On average, Invisalign finished 5.7 months faster than fixed appliances (P = 0.0040). The weighted PAR score reduction with treatment was not statistically different between the Invisalign and fixed appliances groups (P = 0.4573). All cases in both groups had more than 30% reduction in PAR score. Logistic regression analysis indicates the odds of achieving "great improvement" in Invisalign group was only 0.329 times the odds of achieving “great improvement” in the fixed appliances group after controlling for age (P = 0.0150). Conclusions: Our data show that both Invisalign and fixed appliances were able to improve the malocclusion. Invisalign finished treatment faster than fixed appliances. However, it appears that Invisalign may not be as effective as fixed appliances in achieving "great improvement" in the malocclusion. This study might help clinicians to determine appropriate cases for Invisalign treatment.
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Author: Michael Kamatovic
Publisher: Library and Archives Canada = Bibliothèque et Archives Canada
ISBN: 9780612953178
Category :
Languages : en
Pages : 234
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Book Description
InvisalignRTM (Align Technologies Inc., Santa Clara, CA) has recently (1999) been offered correct malocclusions. Few studies have evaluated the capabilities of this appliance. Forty-four cases were studied for comparison of pre- and post treatment results. These cases were mainly mild to moderate Class I malocclusions. Cases were measured according to the PAR (Peer Assessment Rating) and Little's Irregularity Index. The Invisalign RTM appliance improved the overall PAR score (p
Author: Birte Melsen
Publisher: John Wiley & Sons
ISBN: 1119775795
Category : Medical
Languages : en
Pages : 484
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Book Description
The complete reference work covering the increasingly prominent area of adult orthodontics Written by renowned contributors from the orthodontic community and compiled by world-class editors, Adult Orthodontics, 2nd Edition is an authoritative resource on the subject of adult orthodontics, marrying together clinical guidance with a thorough evaluation of the evidence base. Sample topics discussed within the book include: Context for adult orthodontics, including patient demographics and aetiology Treatment planning considerations, including patient case profiles, initial outcomes and longer-term expectations Interdisciplinary and multidisciplinary approaches, including the links between adult orthodontics and periodontics, prosthetics, and temporomandibular disorders This book is an invaluable resource for professionals providing orthodontic treatment to adults and those dealing with orthodontics as part of the interdisciplinary management of the adult dentition. Dedications To all of those who dedicated their spare time to finish this book —Birte Melsen To Emese, my equilibrium To Birte, my inspiration To my grandparents Liliana and Cesare, they know why —Cesare Luzi
Author: Mary M. Griffith
Publisher:
ISBN:
Category : Orthodontics
Languages : en
Pages : 50
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Book Description
Objectives: This study aimed to establish if there is a significant difference in effectiveness between two generations of Invisalign trays in terms of PAR score reduction for finished cases from a graduate orthodontic clinic.
Author: Wesley Lloyd Robinson
Publisher:
ISBN:
Category :
Languages : en
Pages : 82
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Author: Aileen Sehee Kim
Publisher:
ISBN:
Category :
Languages : en
Pages : 67
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Book Description
The aim of the investigation was to search the current literature (from April 2005 to December 2012) and determine the effectiveness of orthodontic tooth movement using the Invisalign system. With changes in attachments implemented within the past few years, a more recent appraisal of the available literature is of value. It is expected that this systematic review will provide a more up-to-date understanding of the treatment effects (efficacy in tooth movement and stability) of the Invisalign system. Additionally, an evaluation of the indications and case selection using Invisalign will be conducted A computerized search was conducted using PubMed, Evidence Based Medicine (EBM) Reviews Database (Cochrane Database of Systematic Reviews), Database of Abstracts of Reviews of Effects and Cochrane Central Register of Controlled Trials, Science Direct, and Thomsen's ISI Web of Science. Inclusion criteria that were to be satisfied by the literature search results were publications in English and human clinical trials. Studies not pertaining to the question of clinical effectiveness of Invisalign were selected for exclusion. Case reports, book chapters, and review papers were considered separately for analysis and contribution to the general information gathering in the systematic review. Book chapters were excluded. Quality assessment was performed on the studies that fulfilled the inclusion criteria. The quality and design of the study was considered. Of the studies that passed the quality assessment stage, a thorough evaluation was completed. Summaries of the included articles were prepared and information regarding study design, subjects, treatment times, and outcomes were organized in tabulated form. Appraisal of the included studies was performed using the 2010 CONSORT statement and 2009 ADA Clinical Recommendations Handbook. Overall, of the 271 studies reviewed (Stage I), 23 were selected for further review (Stage II). Ultimately, 10 studies were included in the systematic review (Stage III). In summary, after thorough analysis of the studies, it has been shown that Invisalign is an effective appliance for minor space closure, lingual constriction, and correction of anterior rotations and marginal ridge height discrepancies. However, Invisalign lacks the ability to correct anteroposterior discrepancies, occlusal contacts, extrusion, and rotations greater than 15 degrees. While the achieved and predicted tooth movement discrepancy was very minimal, it was found that overbite must be overcorrected.
Author: Omar Fetouh
Publisher:
ISBN:
Category :
Languages : en
Pages : 41
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Book Description
Introduction: Invisalign® has become one of the very popular treatment modalities requested by patients to straighten their teeth. However, there has been great controversy among clinicians about the effectiveness of this new treatment modality. Indeed, there are very few studies that report the effectiveness and appropriateness of Invisalign®. It was thus the goal of this retrospective study to help clinicians in deciding whether Invisalign® is appropriate to their patients or not. Materials and Methods: Sixty-seven patients with Class I malocclusion, mild crowing and some overbite were included in this study. All cases had Discrepancy Index (DI) less than 5 and were treated non-extraction. All patients had full permanent dentition and no missing teeth. Thirty-four patients were treated with traditional fixed orthodontics (braces group) and 33 patients were treated with Invisalign®. All patients were treated in a private clinic in Buffalo, New York, by the same practitioner. The posttreatment models were graded using the ABO Objective Grading System (OGS) to assess the treatment outcome of both groups. Paired t-test was used to analyze the data collected in this study. Results: There was no statistical significant differences between the scores of the Invisalign® group and Braces group for Alignment (p=0.059), Occlusal Relationship (p=0.223) and Interproximal Contacts. The Invislaign® group had higher scores in Marginal ridges, Bucco-lingual inclination, Occlusal Contacts, and Overjet than Braces group. Conclusion: According to OGS, Invisalign® can treat mild malocclusion with DI less than 5 as efficiently, if not better, as braces. This study helps clinicians to determine which patients are best suited for Invisalign® treatment.
Author: Theodore Eliades
Publisher: Thieme
ISBN: 3132582271
Category : Medical
Languages : en
Pages : 309
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Book Description
For almost 20 years, clear aligners have seen growing popularity in addressing patients' demands for orthodontic treatment that is also discreet and esthetically inconspicuous. Especially for the adult patient, these almost invisible systems are in considerable demand. Supported by solid clinical evidence, this new work introduces and discusses all the presently available thermoplastically formed products that apply a predetermined strain to the teeth and jaw, with the goal of correcting malpositioned teeth, while also being esthetically acceptable for the patient. Key Features: More than a dozen contributions by top international experts Includes the most recent guidelines on clinical management with aligners Scientific approach presents evidence from material properties research, forces generated with aligners, and treatment outcome assessments Valuable information on changes in oral microbiota, potential side effects, biocompatibility, and more Orthodontic Aligner Treatment will be welcomed by all orthodontic specialists, as well as graduate students, researchers, and clinical faculty in the field.
Author: Waseem Kassas
Publisher:
ISBN:
Category :
Languages : en
Pages : 57
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Book Description
Invisalign® is a new orthodontic treatment modality of treating malocclusion with an advanced esthetic approach. It provides an esthetic and hygienic alternative for patients who want to undergo orthodontic treatment without affecting their facial appearance. However, few studies have been published to evaluate the effectiveness of this appliance. Purpose of the Study: The purpose of this study is to evaluate the Invisalign treatment outcome of mild to moderate malocclusions by using the Model grading system (MGS) of the American board of orthodontics (ABO). Materials and Methods: A total of 425 Invisalign® cases were identified from an orthodontic private practice in buffalo, New York State. Of 425 cases, 119 met the inclusion criteria of having full permanent dentition with (DI) score between 10 and 20, and treated completely with Invisalign without extraction. From those 119 cases, only 31 cases had a complete set of records before and after treatment. The pre-and post-treatment models were assessed using the ABO Model Grading System (MGS) .Wilcoxon signed rank test was used to compare the pre-and post-treatment MGS scores in all categories. Results: The mean scores of all MGS categories (except occlusal contacts score and occlusal relationship score) were improved after treatment. Significant improvements were found in OGS Score (45.03"7.47 vs. 35.87"9.36, p
Author: Orfan Chalabi
Publisher:
ISBN:
Category :
Languages : en
Pages : 152
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Book Description
