{"title":"评估成人不同骨骼错颌和垂直模式的下颌不对称:锥束计算机断层扫描研究。","authors":"Nora Alhazmi","doi":"10.4103/jos.jos_112_22","DOIUrl":null,"url":null,"abstract":"<p><strong>Objectives: </strong>The study aims to measure the mandibular condylar height (CH), ramus height (RH), total height (CH+RH), asymmetry index, and condylar volume (Cvol) in individuals with different anteroposterior and vertical skeletal discrepancies.</p><p><strong>Materials and methods: </strong>The study sample consisted of 131 subjects (60 females and 71 males) with a mean age of 35.06 ± 12.79 years. Pre-existing CBCT images were divided into groups according to the anteroposterior and vertical skeletal discrepancies. The investigator analyzed the data using t-tests to assess the mandibular bilateral sides of the individuals and gender differences. The mean difference between groups was determined using a one-way analysis of variance (ANOVA). The Chi-square test was used to study the association between the asymmetry index and groups.</p><p><strong>Results: </strong>Each individual's bilateral sides exhibited statistically significant differences in CH, RH, and Cvol (<i>P</i> = 0.033, <i>P</i> = 0.039, <i>P</i> = 0.005, respectively), but not in CH+RH (<i>P</i> = 0.458). There were, however, statistically significant gender differences in CH+RH (<i>P</i> < 0.001). Skeletal Class III and hypodivergent groups revealed the highest linear and volumetric values compared to other groups. The asymmetry index was increased in CH (<i>P</i> = 0.006) and Cvol (<i>P</i> = 0.002) in skeletal Class II subjects.</p><p><strong>Conclusions: </strong>Significant differences in CH, RH, and Cvol were found on the right and left sides of the same individual. This study found increased linear and volumetric values in males, skeletal Class III, and hypodivergent subjects. Class II individuals had an increased CH and Cvol asymmetry index. This study highlights in-depth knowledge of mandibular asymmetry, which is extremely important to achieve an accurate diagnosis and provide the best treatment outcome.</p>","PeriodicalId":16604,"journal":{"name":"Journal of Orthodontic Science","volume":"12 ","pages":"33"},"PeriodicalIF":0.0000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/cd/bf/JOS-12-33.PMC10282567.pdf","citationCount":"0","resultStr":"{\"title\":\"Assessment of mandibular asymmetry in different skeletal malocclusions and vertical patterns in adult individuals: A cone-beam computed tomography study.\",\"authors\":\"Nora Alhazmi\",\"doi\":\"10.4103/jos.jos_112_22\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Objectives: </strong>The study aims to measure the mandibular condylar height (CH), ramus height (RH), total height (CH+RH), asymmetry index, and condylar volume (Cvol) in individuals with different anteroposterior and vertical skeletal discrepancies.</p><p><strong>Materials and methods: </strong>The study sample consisted of 131 subjects (60 females and 71 males) with a mean age of 35.06 ± 12.79 years. Pre-existing CBCT images were divided into groups according to the anteroposterior and vertical skeletal discrepancies. The investigator analyzed the data using t-tests to assess the mandibular bilateral sides of the individuals and gender differences. The mean difference between groups was determined using a one-way analysis of variance (ANOVA). The Chi-square test was used to study the association between the asymmetry index and groups.</p><p><strong>Results: </strong>Each individual's bilateral sides exhibited statistically significant differences in CH, RH, and Cvol (<i>P</i> = 0.033, <i>P</i> = 0.039, <i>P</i> = 0.005, respectively), but not in CH+RH (<i>P</i> = 0.458). There were, however, statistically significant gender differences in CH+RH (<i>P</i> < 0.001). Skeletal Class III and hypodivergent groups revealed the highest linear and volumetric values compared to other groups. The asymmetry index was increased in CH (<i>P</i> = 0.006) and Cvol (<i>P</i> = 0.002) in skeletal Class II subjects.</p><p><strong>Conclusions: </strong>Significant differences in CH, RH, and Cvol were found on the right and left sides of the same individual. This study found increased linear and volumetric values in males, skeletal Class III, and hypodivergent subjects. Class II individuals had an increased CH and Cvol asymmetry index. This study highlights in-depth knowledge of mandibular asymmetry, which is extremely important to achieve an accurate diagnosis and provide the best treatment outcome.</p>\",\"PeriodicalId\":16604,\"journal\":{\"name\":\"Journal of Orthodontic Science\",\"volume\":\"12 \",\"pages\":\"33\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/cd/bf/JOS-12-33.PMC10282567.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Orthodontic Science\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.4103/jos.jos_112_22\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"Dentistry\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Orthodontic Science","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4103/jos.jos_112_22","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"Dentistry","Score":null,"Total":0}
引用次数: 0
摘要
目的:本研究旨在测量不同前后垂直骨骼差异个体的下颌髁突高度(CH)、支高(RH)、总高度(CH+RH)、不对称指数和髁突体积(Cvol)。材料与方法:研究对象131例,其中女性60例,男性71例,平均年龄35.06±12.79岁。将已有的CBCT图像根据骨骼正反垂直差异进行分组。研究者使用t检验对数据进行分析,评估双侧下颌骨的个体和性别差异。采用单因素方差分析(ANOVA)确定组间的平均差异。采用卡方检验研究不对称指数与分组之间的相关性。结果:各个体双侧CH、RH、Cvol差异有统计学意义(P = 0.033, P = 0.039, P = 0.005),而CH+RH差异无统计学意义(P = 0.458)。然而,CH+RH的性别差异有统计学意义(P < 0.001)。与其他组相比,骨骼III类和低发散组显示出最高的线性和体积值。骨骼II类受试者的CH (P = 0.006)和Cvol (P = 0.002)的不对称指数增加。结论:同一个体的左右两侧CH、RH、Cvol均有显著差异。该研究发现,男性、骨骼III类和低发散受试者的线性值和体积值增加。II类个体CH和Cvol不对称指数增高。这项研究强调了对下颌不对称的深入了解,这对于实现准确诊断和提供最佳治疗结果至关重要。
Assessment of mandibular asymmetry in different skeletal malocclusions and vertical patterns in adult individuals: A cone-beam computed tomography study.
Objectives: The study aims to measure the mandibular condylar height (CH), ramus height (RH), total height (CH+RH), asymmetry index, and condylar volume (Cvol) in individuals with different anteroposterior and vertical skeletal discrepancies.
Materials and methods: The study sample consisted of 131 subjects (60 females and 71 males) with a mean age of 35.06 ± 12.79 years. Pre-existing CBCT images were divided into groups according to the anteroposterior and vertical skeletal discrepancies. The investigator analyzed the data using t-tests to assess the mandibular bilateral sides of the individuals and gender differences. The mean difference between groups was determined using a one-way analysis of variance (ANOVA). The Chi-square test was used to study the association between the asymmetry index and groups.
Results: Each individual's bilateral sides exhibited statistically significant differences in CH, RH, and Cvol (P = 0.033, P = 0.039, P = 0.005, respectively), but not in CH+RH (P = 0.458). There were, however, statistically significant gender differences in CH+RH (P < 0.001). Skeletal Class III and hypodivergent groups revealed the highest linear and volumetric values compared to other groups. The asymmetry index was increased in CH (P = 0.006) and Cvol (P = 0.002) in skeletal Class II subjects.
Conclusions: Significant differences in CH, RH, and Cvol were found on the right and left sides of the same individual. This study found increased linear and volumetric values in males, skeletal Class III, and hypodivergent subjects. Class II individuals had an increased CH and Cvol asymmetry index. This study highlights in-depth knowledge of mandibular asymmetry, which is extremely important to achieve an accurate diagnosis and provide the best treatment outcome.