{"title":"使用 T-Scan III 系统比较正畸治疗中前磨牙不拔牙和拔牙治疗方法的正畸后咬合力分布。","authors":"Ratchawan Tansalarak, Nattapat Khamnuengsitthi, Mayurach Pipatphatsakorn","doi":"10.1055/s-0044-1789002","DOIUrl":null,"url":null,"abstract":"<p><strong>Objective: </strong> To compare bite force distributions in corresponding mouth regions between postorthodontic patients who underwent nonextraction and extraction approaches using the T-Scan III system (Tekscan, Inc, Massachusetts, United States).</p><p><strong>Materials and methods: </strong> Thirty-six postorthodontic patients were divided into two groups: (1) 18 subjects with the nonextraction treatment and (2) 18 subjects with the extraction of four first-premolar treatments. The measurements were performed using the T-Scan to collect the occlusal bite force at the maximal intercuspal position to generate the bite force in the anterior region (incisors and canines) and posterior region (premolars and molars), the bite force in individual teeth, and the anteroposterior bite force ratio (A-P ratio).</p><p><strong>Statistical analysis: </strong> The mean bite force in each region, individual teeth, and the A-P ratio were compared between the two groups by the Mann-Whitney's <i>U</i>-tests. Within-group comparisons of the mean bite force in each region were performed using Wilcoxon's signed rank tests.</p><p><strong>Results: </strong> The bite force in anterior and posterior regions, and the A-P ratio of the nonextraction group show no significant difference compared with the extraction group (<i>p</i> > 0.05). For individual teeth (central incisors, lateral incisors, canines, second premolars, first molars, and second molars), each tooth exhibited nonsignificantly different bite forces (<i>p</i> > 0.05) except for the second molars. The second molars in the nonextraction group had significantly less bite force than in the extraction group (<i>p</i> = 0.001). The comparison of occlusal bite force between the right and left sides showed that in the nonextraction group, the right side had significantly greater force (<i>p</i> < 0.05). In the extraction group, there was no significant difference between the sides (<i>p</i> > 0.05).</p><p><strong>Conclusion: </strong> Both nonextraction and extraction orthodontic treated patients exhibited the similar bite force distribution patterns in regions and individual teeth except for the higher occlusal force on the second molars in the extractions compared with the nonextractions.</p>","PeriodicalId":12028,"journal":{"name":"European Journal of Dentistry","volume":" ","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Comparison of Postorthodontic Occlusal Force Distributions between Nonextraction and Extraction Treatment Approaches of Premolars for Orthodontic Treatment by Using T-Scan III System.\",\"authors\":\"Ratchawan Tansalarak, Nattapat Khamnuengsitthi, Mayurach Pipatphatsakorn\",\"doi\":\"10.1055/s-0044-1789002\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Objective: </strong> To compare bite force distributions in corresponding mouth regions between postorthodontic patients who underwent nonextraction and extraction approaches using the T-Scan III system (Tekscan, Inc, Massachusetts, United States).</p><p><strong>Materials and methods: </strong> Thirty-six postorthodontic patients were divided into two groups: (1) 18 subjects with the nonextraction treatment and (2) 18 subjects with the extraction of four first-premolar treatments. The measurements were performed using the T-Scan to collect the occlusal bite force at the maximal intercuspal position to generate the bite force in the anterior region (incisors and canines) and posterior region (premolars and molars), the bite force in individual teeth, and the anteroposterior bite force ratio (A-P ratio).</p><p><strong>Statistical analysis: </strong> The mean bite force in each region, individual teeth, and the A-P ratio were compared between the two groups by the Mann-Whitney's <i>U</i>-tests. Within-group comparisons of the mean bite force in each region were performed using Wilcoxon's signed rank tests.</p><p><strong>Results: </strong> The bite force in anterior and posterior regions, and the A-P ratio of the nonextraction group show no significant difference compared with the extraction group (<i>p</i> > 0.05). For individual teeth (central incisors, lateral incisors, canines, second premolars, first molars, and second molars), each tooth exhibited nonsignificantly different bite forces (<i>p</i> > 0.05) except for the second molars. The second molars in the nonextraction group had significantly less bite force than in the extraction group (<i>p</i> = 0.001). The comparison of occlusal bite force between the right and left sides showed that in the nonextraction group, the right side had significantly greater force (<i>p</i> < 0.05). In the extraction group, there was no significant difference between the sides (<i>p</i> > 0.05).</p><p><strong>Conclusion: </strong> Both nonextraction and extraction orthodontic treated patients exhibited the similar bite force distribution patterns in regions and individual teeth except for the higher occlusal force on the second molars in the extractions compared with the nonextractions.</p>\",\"PeriodicalId\":12028,\"journal\":{\"name\":\"European Journal of Dentistry\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-11-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"European Journal of Dentistry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1055/s-0044-1789002\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"Dentistry\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"European Journal of Dentistry","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1055/s-0044-1789002","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Dentistry","Score":null,"Total":0}
引用次数: 0
摘要
目的:使用 T-Scan III 系统(Tekscan Inc:使用 T-Scan III 系统(Tekscan, Inc, Massachusetts, United States)比较接受非拔牙治疗和拔牙治疗的正畸后患者在相应口腔区域的咬合力分布:将 36 名正畸后患者分为两组:(1) 18 名接受不拔牙治疗的患者;(2) 18 名接受拔除四颗第一前磨牙治疗的患者。测量使用 T-Scan 采集最大牙间隙位置的咬合力,从而得出前牙区(切牙和犬牙)和后牙区(前磨牙和磨牙)的咬合力、单个牙齿的咬合力以及前后牙咬合力比值(A-P 比值):两组间各区平均咬合力、单个牙齿咬合力和 A-P 比值的比较采用 Mann-Whitney's U 检验。各区平均咬合力的组内比较采用 Wilcoxon 符号秩检验:结果:与拔牙组相比,未拔牙组的前后区咬合力和 A-P 比值无显著差异(P > 0.05)。就单个牙齿(中切牙、侧切牙、犬齿、第二前磨牙、第一磨牙和第二磨牙)而言,除第二磨牙外,每个牙齿的咬合力均无显著差异(P > 0.05)。未拔牙组第二磨牙的咬合力明显低于拔牙组(p = 0.001)。左右两侧咬合力的比较显示,在非拔牙组中,右侧的咬合力明显更大(p p > 0.05):结论:除了拔牙组第二磨牙的咬合力比非拔牙组高外,非拔牙组和拔牙正畸治疗患者在区域和单个牙齿上的咬合力分布模式相似。
Comparison of Postorthodontic Occlusal Force Distributions between Nonextraction and Extraction Treatment Approaches of Premolars for Orthodontic Treatment by Using T-Scan III System.
Objective: To compare bite force distributions in corresponding mouth regions between postorthodontic patients who underwent nonextraction and extraction approaches using the T-Scan III system (Tekscan, Inc, Massachusetts, United States).
Materials and methods: Thirty-six postorthodontic patients were divided into two groups: (1) 18 subjects with the nonextraction treatment and (2) 18 subjects with the extraction of four first-premolar treatments. The measurements were performed using the T-Scan to collect the occlusal bite force at the maximal intercuspal position to generate the bite force in the anterior region (incisors and canines) and posterior region (premolars and molars), the bite force in individual teeth, and the anteroposterior bite force ratio (A-P ratio).
Statistical analysis: The mean bite force in each region, individual teeth, and the A-P ratio were compared between the two groups by the Mann-Whitney's U-tests. Within-group comparisons of the mean bite force in each region were performed using Wilcoxon's signed rank tests.
Results: The bite force in anterior and posterior regions, and the A-P ratio of the nonextraction group show no significant difference compared with the extraction group (p > 0.05). For individual teeth (central incisors, lateral incisors, canines, second premolars, first molars, and second molars), each tooth exhibited nonsignificantly different bite forces (p > 0.05) except for the second molars. The second molars in the nonextraction group had significantly less bite force than in the extraction group (p = 0.001). The comparison of occlusal bite force between the right and left sides showed that in the nonextraction group, the right side had significantly greater force (p < 0.05). In the extraction group, there was no significant difference between the sides (p > 0.05).
Conclusion: Both nonextraction and extraction orthodontic treated patients exhibited the similar bite force distribution patterns in regions and individual teeth except for the higher occlusal force on the second molars in the extractions compared with the nonextractions.
期刊介绍:
The European Journal of Dentistry is the official journal of the Dental Investigations Society, based in Turkey. It is a double-blinded peer-reviewed, Open Access, multi-disciplinary international journal addressing various aspects of dentistry. The journal''s board consists of eminent investigators in dentistry from across the globe and presents an ideal international composition. The journal encourages its authors to submit original investigations, reviews, and reports addressing various divisions of dentistry including oral pathology, prosthodontics, endodontics, orthodontics etc. It is available both online and in print.