American Journal of Orthodontics and Dentofacial Orthopedics最新文献

{"title":"Authors’ response","authors":"Hye-Young Sim, Jung-Sub An, Min-Ho Jung","doi":"10.1016/j.ajodo.2026.01.002","DOIUrl":"10.1016/j.ajodo.2026.01.002","url":null,"abstract":"","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"169 3","pages":"Pages 264-265"},"PeriodicalIF":3.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147322495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Limiting corporate interference","authors":"Laurance Jerrold","doi":"10.1016/j.ajodo.2025.12.006","DOIUrl":"10.1016/j.ajodo.2025.12.006","url":null,"abstract":"","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"169 3","pages":"Pages 402-404"},"PeriodicalIF":3.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147322490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Information for readers","authors":"","doi":"10.1016/S0889-5406(26)00043-0","DOIUrl":"10.1016/S0889-5406(26)00043-0","url":null,"abstract":"","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"169 3","pages":"Page A8"},"PeriodicalIF":3.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147414107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Orthodontics and pediatric dentistry: Competition or collaboration?","authors":"Jae Hyun Park (Editor-in-Chief)","doi":"10.1016/j.ajodo.2025.11.003","DOIUrl":"10.1016/j.ajodo.2025.11.003","url":null,"abstract":"","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"169 3","pages":"Pages 261-262"},"PeriodicalIF":3.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147322524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The essence of soul","authors":"Peter M. Greco","doi":"10.1016/j.ajodo.2025.12.001","DOIUrl":"10.1016/j.ajodo.2025.12.001","url":null,"abstract":"","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"169 3","pages":"Page 267"},"PeriodicalIF":3.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147322509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of a novel 3-dimensional-printed attachment transfer method with conventional methods in clear aligner therapy: An in vitro study","authors":"Sabahattin Bor,&nbsp;Samet Özden","doi":"10.1016/j.ajodo.2025.09.031","DOIUrl":"10.1016/j.ajodo.2025.09.031","url":null,"abstract":"<div><h3>Introduction</h3><div>This study aimed to compare the accuracy of a novel 3-dimensional (3D)-printed attachment transfer technique with conventional composite-based methods, evaluating the effect of template material and thickness.</div></div><div><h3>Methods</h3><div>Three transfer methods were investigated: nonflowable composite resin, flowable composite resin, and 3D-printed attachments with a transfer carrier. In the conventional attachment transfer method, 4 different thermoplastic template sheet thicknesses were used: 0.3, 0.5, 0.75, and 0.8 mm. A standardized reference model with 6 digitally planned attachments was used for all groups. Using each method, attachments were transferred to 3D-printed dental models, which were then scanned and superimposed with the reference model. Root mean square and mean distance values were calculated using CloudCompare software (version 2.14; <span><span>www.danielgm.net/cc/</span><svg><path></path></svg></span>) for surface deviation analysis.</div></div><div><h3>Results</h3><div>Statistically significant differences were observed among the attachment transfer methods (<em>P</em> &lt;0.001, Kruskal-Wallis test). The 3D-printed attachment group exhibited the highest geometric accuracy across all evaluated sites. Pairwise comparisons showed that the 3D-printed group performed significantly better than both composite-based groups (<em>P</em> &lt;0.001, Dunn’s test). Composite viscosity showed no significant effect on transfer accuracy, except for attachments 16 and 23 in mean distance values (<em>P</em> = 0.023-0.031) and attachment 16 in root mean square values (<em>P</em> = 0.043). Template thickness significantly influenced transfer accuracy, with thicker aligners generally producing lower deviation values, particularly between Tristar (0.3 mm) and Track A (0.8 mm) (<em>P</em> &lt;0.05 to <em>P</em> &lt;0.001).</div></div><div><h3>Conclusions</h3><div>The 3D-printed attachment transfer method demonstrated superior accuracy than conventional composite-based methods. Although the thinnest template exhibited greater deviations, accuracy varied among the different templates, suggesting that both material thickness and composition may influence transfer performance. Composite viscosity did not substantially affect transfer accuracy, as both flowable and nonflowable composite resins produced comparable results in most attachment sites.</div></div>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"169 3","pages":"Pages 319-332"},"PeriodicalIF":3.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145566267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of masticatory muscle activity during clear aligner orthodontic treatment","authors":"Betina Saldini Behs,&nbsp;Eduardo Martinelli Santayana de Lima,&nbsp;Luciane Macedo de Menezes,&nbsp;Rafael Reimann Baptista","doi":"10.1016/j.ajodo.2025.09.028","DOIUrl":"10.1016/j.ajodo.2025.09.028","url":null,"abstract":"<div><h3>Introduction</h3><div>Orthodontic tooth movement occurs within a functional craniofacial complex that includes the masticatory muscles. Clear aligners cover the dental occlusion and may alter muscle function and patient perception. This study evaluated changes in masticatory muscle activity with aligner use and the associated impact on oral health–related quality of life.</div></div><div><h3>Methods</h3><div>Twenty-four adult patients (5 males and 19 females; mean age 38.2 ± 13.4 years) undergoing clear aligner treatment were assessed in a cross-sectional study. Surface electromyography (EMG) of the masseter and anterior temporalis muscles was recorded under 2 conditions: with and without the aligners in place. EMG indexes of overall muscle effort (impact) and intensity were analyzed, along with the distribution of bite forces among the 4 muscles. Each patient’s EMG signals were normalized against a maximal clench on cotton rolls. Participants also completed the 14-item Oral Health Impact Profile questionnaire. Paired statistical comparisons, correlation analyses, and 1-sample tests for muscle balance were performed (α = 0.05).</div></div><div><h3>Results</h3><div>Aligner use was associated with a significant increase in EMG activity. The impact index was 27.6% higher with aligners than without (<em>P</em> &lt;0.001), and the EMG intensity was modestly but significantly elevated with aligners (4.1%, <em>P</em> = 0.007). Aligner wear produced a more balanced distribution of muscle activity: with aligners, no significant deviation from an equal 25% contribution per muscle was observed, whereas without aligners, the muscle contributions were uneven (<em>P</em> &lt;0.001 for imbalance in each muscle). The 14-item Oral Health Impact Profile scores were low (median 4.5 on a 0–56 scale) and did not correlate with muscle activity (<em>P</em> = 0.806). No significant differences in muscle indexes were found between sexes, and longer duration of aligner use showed no significant correlation with muscle activity levels.</div></div><div><h3>Conclusions</h3><div>Aligners tended to distribute occlusal forces more evenly across muscles, potentially reducing localized overload. These findings suggest that clinicians should anticipate a period of adaptation in which masticatory muscles respond to the altered occlusion.</div></div>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"169 3","pages":"Pages 285-295.e2"},"PeriodicalIF":3.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145642463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Variability associated with the infrazygomatic region for miniscrew insertion in patients with different growth patterns, sex, and growth status","authors":"Wiley Liou ,&nbsp;Matthew J. Kesterke ,&nbsp;Veerasathpurush Allareddy ,&nbsp;Sumit Yadav ,&nbsp;Larry Tadlock ,&nbsp;Shivam Mehta","doi":"10.1016/j.ajodo.2025.10.010","DOIUrl":"10.1016/j.ajodo.2025.10.010","url":null,"abstract":"<div><h3>Introduction</h3><div>The purpose of this study was to quantitatively evaluate the infrazygomatic bone parameters (buccal bone thickness and buccal bone height) for miniscrew placement. An additional aim was to compare and contrast the infrazygomatic bone parameters in growing and nongrowing males and females with hyperdivergent, normodivergent, and hypodivergent skeletal patterns.</div></div><div><h3>Methods</h3><div>Cone-beam computed tomography scans were obtained from 718 deidentified orthodontic patients and categorized by growth status (growing and nongrowing), sex (male and female), and skeletal pattern (hyperdivergent, hypodivergent, and normodivergent). Buccal bone thickness and buccal bone height were measured at 3 locations: 2P-1M (between the maxillary second premolar and first molar), 1M (between the mesial and distal roots of the maxillary first molar), and 1M-2M (between the maxillary first and second molars) and at 3 levels above base plane (BP): 5BP, 8BP, and 11BP, which were 5, 8, and 11 mm above the alveolar crest, respectively.</div></div><div><h3>Results</h3><div>Males had significantly greater buccal bone thickness than females at 5BP and 8BP (<em>P</em> &lt;0.05). Males also had greater buccal bone height than females at the 1M-2M location. Buccal bone thickness increased, and buccal bone height decreased significantly as it moved posteriorly from the 2P-1M location to the 1M-2M location. Buccal bone thickness was higher in growing females and males than in nongrowing females and males. Multiple linear regression demonstrated a significant relationship between buccal bone thickness and the prediction variables: skeletal pattern and sex. Buccal bone thickness was greater in the hypodivergent skeletal pattern than in the hyperdivergent skeletal pattern at the level of 8BP in the location of 2P-1M and at the level of 11BP in the locations of 2P-1M and 1M. Buccal bone height was greater in the hyperdivergent skeletal pattern at the 2P-1M and 1M locations than in the hypodivergent and normodivergent skeletal patterns.</div></div><div><h3>Conclusions</h3><div>Because of adequate buccal bone thickness and acceptable buccal bone height, the 1M-2M location was considered the optimal insertion site for the placement of infrazygomatic miniscrews. Patients with a hyperdivergent skeletal pattern showed reduced buccal bone thickness and increased buccal bone height. Buccal bone thickness was significantly greater in males than in females in all skeletal patterns.</div></div>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"169 3","pages":"Pages 343-358"},"PeriodicalIF":3.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145709972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clarification regarding data interpretation in “Impact of dental crowding on the trueness and precision of intraoral scanners: Comparison across different devices and techniques”","authors":"Aditi Bedi,&nbsp;J. Monisha,&nbsp;Balasubramanian Madhan","doi":"10.1016/j.ajodo.2025.11.019","DOIUrl":"10.1016/j.ajodo.2025.11.019","url":null,"abstract":"","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"169 3","pages":"Page 263"},"PeriodicalIF":3.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147322481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Queries regarding “Palatal bone healing after removal of miniscrew-assisted rapid palatal expansion devices”","authors":"Sarath Kumar V","doi":"10.1016/j.ajodo.2025.12.009","DOIUrl":"10.1016/j.ajodo.2025.12.009","url":null,"abstract":"","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":"169 3","pages":"Page 265"},"PeriodicalIF":3.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147322527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}