The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
I Cai - One of the best experts on this subject based on the ideXlab platform.
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preliminary study of the anchorage effect of a modified Transpalatal Arch tongue anchorage pad
Chinese Journal of Orthodontics, 2017Co-Authors: Hui Zheng, I CaiAbstract:Objective To evaluate the sagittal and vertical anchorage capacity of the tongue anchorage pad on upper first molars in extraction cases. Methods 11 skeletal hyperdivergent Class Ⅱ premolar extraction cases treated with the physiological anchorage system and aided by the tongue anchorage pad were studied. 3-dimension models of the cases before treatment and after space closure were superimposed to determine the sagittal and vertical movements of the upper anchorage molars during treatment. 11 extraction patients treated with the physiological anchorage system alone were selected as the control group. Anchorage molar movements of the adults and the teenagers was compared to explore the influence of age. Results The average mesial movement of the 5 occlusal marks of the upper first molars aided by tongue anchorage pad was 1.33 to 1.48 mm, and the average vertical intrusion was 1.05 to 1.45 mm, which was significantly less than the control group (P<0.05). The mean anchorage loss of the teenagers was significantly more than the adults, whereas the molar intrusion was significantly less (P<0.05). Conclusions The tongue anchorage pad is a reliable and clinically feasible method to enhance the sagittal anchorage of and to intrude the maxillary first molars for the extraction cases. Age appears to be a significant factor influencing the anchorage capacity of the tongue anchorage pad, and molar extrusion and mesial movement are more prone to occur in teenagers than in adults. Key words: Tongue anchorage pad; Anchorage; Clinical reseArch
Hui Zheng - One of the best experts on this subject based on the ideXlab platform.
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preliminary study of the anchorage effect of a modified Transpalatal Arch tongue anchorage pad
Chinese Journal of Orthodontics, 2017Co-Authors: Hui Zheng, I CaiAbstract:Objective To evaluate the sagittal and vertical anchorage capacity of the tongue anchorage pad on upper first molars in extraction cases. Methods 11 skeletal hyperdivergent Class Ⅱ premolar extraction cases treated with the physiological anchorage system and aided by the tongue anchorage pad were studied. 3-dimension models of the cases before treatment and after space closure were superimposed to determine the sagittal and vertical movements of the upper anchorage molars during treatment. 11 extraction patients treated with the physiological anchorage system alone were selected as the control group. Anchorage molar movements of the adults and the teenagers was compared to explore the influence of age. Results The average mesial movement of the 5 occlusal marks of the upper first molars aided by tongue anchorage pad was 1.33 to 1.48 mm, and the average vertical intrusion was 1.05 to 1.45 mm, which was significantly less than the control group (P<0.05). The mean anchorage loss of the teenagers was significantly more than the adults, whereas the molar intrusion was significantly less (P<0.05). Conclusions The tongue anchorage pad is a reliable and clinically feasible method to enhance the sagittal anchorage of and to intrude the maxillary first molars for the extraction cases. Age appears to be a significant factor influencing the anchorage capacity of the tongue anchorage pad, and molar extrusion and mesial movement are more prone to occur in teenagers than in adults. Key words: Tongue anchorage pad; Anchorage; Clinical reseArch
Hara Khanna - One of the best experts on this subject based on the ideXlab platform.
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mini screw implant or Transpalatal Arch mediated anchorage reinforcement during canine retraction a randomized clinical trial
Journal of Orthodontics, 2012Co-Authors: Mohi Sharma, Vinee Sharma, Hara KhannaAbstract:AbstractObjective: To compare mesial movement of upper first molars during maxillary canine retraction using a pre-adjusted edgewise appliance provided by anchorage reinforcement and a Transpalatal Arch or mini-screw implant.Design: Randomized clinical trial.Setting: Department of Orthodontics and Dentofacial Orthopedics, Armed Forces Medical College, Pune, India.Subjects and methods: From a cohort of subjects requiring the extraction of both upper first premolars and pre-adjusted edgewise appliances to correct their malocclusion, a total of 30 were randomly allocated to receive two different forms of anchorage reinforcement: Group A – receiving mini-screw implant and Group B – receiving a Transpalatal Arch Group A subjects received titanium mini-screw implants placed at the start of treatment between the maxillary second premolar and maxillary first molar. Maxillary second premolars were secured to the mini-screw implants using of 0·010-inch stainless steel ligature wire. Group B subjects received a cust...
Defne Kecik - One of the best experts on this subject based on the ideXlab platform.
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comparison of temporary anchorage devices and Transpalatal Arch mediated anchorage reinforcement during canine retraction
European Journal of Dentistry, 2016Co-Authors: Defne KecikAbstract:Objective: The purpose of this study was to compare the dental and skeletal effects of canine retraction using conventional anchorage reinforcement systems and comparing them with the usage of TADs. Materials and Methods: The sample consisted of 50 patients having Class I malocclusions with bimaxillary protrusion indicated for first premolar extraction, and allocated into two groups. The first group consisted of 25 patients with a mean age of 18,7 years (min:14, max:22 years, 16 girls and 9 boys) that TADs were applied as an anchorage mechanic between attached gingiva of upper second premolar and first molar teeth. The second group consisted of 25 patients with a mean age of 19,4 years (min:15, max:23 years, 14 girls and 11 boys) that conventional molar anchorage with Transpalatal Arch (TPA) was applied for the anchorage mechanics against canine retraction. Results: The results showed that mean mesial movement and the tipping of the first molars in TAD group between T0 - T1 were insignificant (P > 0,05), however in the TPA group were significant (P 0,05). Conclusion: Although TPA is a useful appliance, it doesn't provide an effective anchorage control on anteroposterior movement maxillary first molar teeth concerning first premolar extraction treatment. TADs are more convenient to provide absolute anchorage during maxillary canine retraction in contrast to Transpalatal Arch.
Letizia Perillo - One of the best experts on this subject based on the ideXlab platform.
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predictors of long term stability of maxillary dental Arch dimensions in patients treated with a Transpalatal Arch followed by fixed appliances
Progress in Orthodontics, 2015Co-Authors: Gaetana Raucci, Maryam Elyasi, Camila Pachecopereira, Vincenzo Grassia, Fabrizia Dapuzzo, Carlos Floresmi, Letizia PerilloAbstract:Background The aim of this retrospective study was to identify which dental and/or cephalometric variables were predictors of long-term maxillary dental Arch stability in patients treated with a Transpalatal Arch (TPA) during the mixed dentition phase followed by full fixed appliances in the permanent dentition.
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Predictors of long-term stability of maxillary dental Arch dimensions in patients treated with a Transpalatal Arch followed by fixed appliances
Progress in Orthodontics, 2015Co-Authors: Gaetana Raucci, Maryam Elyasi, Vincenzo Grassia, Camila Pachêco-pereira, Fabrizia D’apuzzo, Carlos Flores-mir, Letizia PerilloAbstract:Background The aim of this retrospective study was to identify which dental and/or cephalometric variables were predictors of long-term maxillary dental Arch stability in patients treated with a Transpalatal Arch (TPA) during the mixed dentition phase followed by full fixed appliances in the permanent dentition. Methods Thirty-six patients, treated with TPA followed up by full fixed appliances, were divided into stable and relapse groups based on the long-term presence or not of relapse. Intercuspid, interpremolar and intermolar widths, Arch length and perimeter, crowding, and upper incisor proclination were evaluated before treatment ( T _0), post-TPA treatment ( T _1), post-fixed appliance treatment ( T _2), and a minimum of 3 years after full fixed appliances’ removal ( T _3). A binary logistic regression was performed thereafter to evaluate the impact of the dental Arch and cephalometric measurements at T _1 and the changes between T _0 and T _1 as predictive variables for relapse at T _3. Results The proposed model explained 42.7 % of the variance in treatment stability and correctly classified 72.2 % of the sample. Of the seven predictive variables, only upper anterior crowding ( p = 0.029) was statistically significant. For every millimeter of decreased crowding at T _1 (after TPA treatment/before starting the fixed orthodontic treatment), there was an increase of 3.57 times in the odds of having stability. Conclusions The best predictor of relapse was maxillary crowding before treatment. The odds of relapse increase by 3.6 times for every millimeter of crowding at baseline.
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maxillary Arch changes with Transpalatal Arch treatment followed by full fixed appliances
Angle Orthodontist, 2015Co-Authors: Gaetana Raucci, Camila Pachecopereira, Vincenzo Grassia, Fabrizia Dapuzzo, Carlos Floresmi, Letizia PerilloAbstract:ABSTRACT Objective: To evaluate short- and long-term maxillary dental Arch dimensional changes in patients treated with a Transpalatal Arch (TPA) during mixed dentition followed by full fixed appliances in the permanent dentition compared with an untreated sample. Materials and Methods: Dental casts and lateral cephalograms obtained from 36 consecutively treated patients before TPA treatment (T0), after TPA treatment (T1), after fixed appliance treatment (T2), and a minimum of 3 years after fixed appliance treatment (T3) were analyzed. The control group was matched as closely as possible. Arch widths, perimeter, and length, as well as crowding and incisor proclination, were evaluated. Results: In the treated group, intercanine, interpremolar, and intermolar widths and Arch perimeter increased significantly at T1. At T2, only the intercanine width increase was still significant. At T3 all Arch dimensions decreased, remaining larger than they were at T0. The Arch length increased after T1, significantly ...
