Journal of Orthodontics最新文献

{"title":"Contemporary Twin Block appliance wear protocols: A survey of UK orthodontists.","authors":"Queenie Ong, Hamza Anwar, Ahmed El-Angbawi","doi":"10.1177/14653125231176569","DOIUrl":"10.1177/14653125231176569","url":null,"abstract":"<p><strong>Objective: </strong>This study was undertaken to determine contemporary trends in the use of the Twin Block appliance among UK orthodontists, including the wear time currently prescribed. In addition, the study explored if there had been any change in wear time prescribed, considering recent research evidence proposing part-time wear.</p><p><strong>Design: </strong>Cross-sectional, online survey.</p><p><strong>Participants: </strong>Members of the British Orthodontic Society (BOS).</p><p><strong>Methods: </strong>The questionnaire was emailed to all BOS members in November 2021 and hosted on the QualtricsXM platform. The questionnaire was piloted for content validity and tested for reliability.</p><p><strong>Results: </strong>A response rate of 19% was attained. Nearly all (n = 244, 99%) participants used the Twin Block, and 90% (n = 218) prescribed full-time wear including/excluding eating. Although the majority (n = 168, 69%) had not made changes to their wear time prescriptions, nearly one-third (n = 75, 31%) had. Those who reported a change in their prescriptions currently prescribe less wear time than before, and commonly quoted 'research evidence' as the reason. A wide range in success rates (41%-100%) was reported, with patient compliance as the main reason for treatment discontinuation.</p><p><strong>Conclusion: </strong>The Twin Block is a popular functional appliance among orthodontists in the UK, originally designed by Clark to be worn full time to maximise functional forces applied to the dentition. However, this wear regime may place considerable strain on patient compliance. Most participants prescribed full-time Twin Block wear excluding eating. Approximately one-third of orthodontists made changes to their wear time prescriptions during their practising career, and currently instruct less wear time than before.</p>","PeriodicalId":16677,"journal":{"name":"Journal of Orthodontics","volume":" ","pages":"70-78"},"PeriodicalIF":1.3,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9532803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"2023 at the Journal of Orthodontics.","authors":"","doi":"10.1177/14653125241228960","DOIUrl":"10.1177/14653125241228960","url":null,"abstract":"","PeriodicalId":16677,"journal":{"name":"Journal of Orthodontics","volume":"51 1","pages":"89-92"},"PeriodicalIF":1.3,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140059618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Continued Professional Development.","authors":"","doi":"10.1177/14653125231211392","DOIUrl":"https://doi.org/10.1177/14653125231211392","url":null,"abstract":"","PeriodicalId":16677,"journal":{"name":"Journal of Orthodontics","volume":"50 4","pages":"450-452"},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138470440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A personal view of orthodontic research since the first edition of the <i>British / Journal of Orthodontics</i>.","authors":"Kevin O'Brien","doi":"10.1177/14653125231214813","DOIUrl":"10.1177/14653125231214813","url":null,"abstract":"","PeriodicalId":16677,"journal":{"name":"Journal of Orthodontics","volume":"50 1_suppl","pages":"6-8"},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139697711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of expansion forces of five pure bone-borne maxillary expander designs anchored with orthodontic mini-implants: An in vitro study.","authors":"Andre Walter, Fernando de la Iglesia, Heinz Winsauer, Oliver Ploder, Brigitte Wendl, Andreu Puigdollers Perez","doi":"10.1177/14653125231152502","DOIUrl":"10.1177/14653125231152502","url":null,"abstract":"<p><strong>Aim: </strong>This in vitro study investigates the limit of expansion forces and torque wrench forces developed by five skeletal bone expander designs (MICRO 2/4 expanders™) for clinical application.</p><p><strong>Material and methods: </strong>A total of 30 skeletal expanders were placed in artificial bone blocks and mechanically tested, simulating maxillary expansion. Differences in jackscrew (Dentaurum™ [D], Superscrew™ [S] and Powerscrew™ [P]), number of orthodontic mini-implants (OMIs; two or four) and their placement inclinations (parallel 0° or 10° inclination) form five designs (D4/10°, S4/0°, S4/10°, P4/10° and P2/10°). Expansion forces and torque wrench values were registered, and radiographs were made initially and after 4 mm of expansion. Stress-strain curves were obtained after successive activations and the statistical analysis was performed as appropriate.</p><p><strong>Results: </strong>Plastic deformations in the OMIs and jackscrew occurred around the activation numbers 11-13, with torque wrench values in the range of 500-700 cN. The maximum expansion forces in expanders with four OMIs varied from 93.0 (D4/10°) to 166.6 N (P4/10°) whereas two OMI expanders (P2/10°) registered forces of 79.4 N. Radiographs revealed during loads bending forces (S4/00°, S4/10°) with jackscrew and OMIs deformation in a convex shape, and shear forces (P4/10°, P2/10°) demonstrated only OMIs deformation in a concave shape, providing 15% more expansive force. The jackscrew D4/10° did not have any deformation, but its wire key did not allow reliable activations from activation number 10 and compared to S4/10° and P4/10°, these expanders provided greater expansion forces (<i>P</i> = 0.000 and <i>P</i> = 0.032, respectively).</p><p><strong>Conclusion: </strong>The different results obtained in stability and expansion forces indicate that if the activations are carried out under extreme conditions, they may have clinical importance with deformations and non-working expansion mechanics. Jackscrew designs play an important role in expansive forces and expander stability. Torque wrench values can be used clinically as a tool to asses the expansion forces and to avoid deformations.</p>","PeriodicalId":16677,"journal":{"name":"Journal of Orthodontics","volume":" ","pages":"335-343"},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10699856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In vivo aging-induced surface roughness alterations of Invisalign^® and 3D-printed aligners.","authors":"Despina Koletsi, Nearchos Panayi, Christodoulos Laspos, Athanasios E Athanasiou, Spiros Zinelis, Theodore Eliades","doi":"10.1177/14653125221145948","DOIUrl":"10.1177/14653125221145948","url":null,"abstract":"<p><strong>Objective: </strong>To assess the surface roughness of in-house 3D-printed orthodontic aligners compared with Invisalign^® appliances, both retrieved as well as in the 'as-received' control status.</p><p><strong>Design: </strong>An in vitro study following intra-oral material aging.</p><p><strong>Setting and participants: </strong>Twelve clinically used Invisalign^® appliances and the same number of 3D-printed aligners, without involvement of attachments, were obtained from a respective number of patients. A similar number of 'as-received' aligners, of each material, were used as control (CON) groups.</p><p><strong>Method: </strong>Four groups of materials were examined: A = Invisalign^® CON; B = Invisalign^® used; C = 3D-printed CON; and D = 3D-printed used. Optical profilometry was employed to examine the following surface roughness parameters: amplitude parameters Sa, Sq and Sz and functional parameters Sc and Sv. Descriptive statistics and quantile regression modeling were conducted, and the level of statistical significance was set at α = 0.05.</p><p><strong>Results: </strong>Intra-oral exposure of 3D-printed aligners was significantly associated with increase in all tested parameters (<i>P</i> < 0.001 at all occasions). Significant differences were detected in the retrieved 3D-printed aligners compared with Invisalign^® retrieved, with the exception of Sz. The respective effect sizes (median differences) were as follows: Sa: 169 nm, 95% confidence interval [CI] = 89-248, <i>P</i> < 0.001; Sq: 315 nm, 95% CI = 152-477, <i>P</i> < 0.001; Sc: 233 nm³/nm², 95% CI = 131-335, <i>P</i> < 0.001; and Sv: 43 nm³/nm², 95% CI = 17-68, <i>P</i> = 0.002.</p><p><strong>Conclusion: </strong>Within the limitations of this study, we concluded that surface roughness differences existed between 3D-printed aligners and Invisalign^® in the retrieved status, as well as between the control and retrieved 3D-printed groups.</p>","PeriodicalId":16677,"journal":{"name":"Journal of Orthodontics","volume":" ","pages":"352-360"},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10693732/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10805607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effectiveness of Waterpik^® for oral hygiene maintenance in orthodontic fixed appliance patients: A randomised controlled trial.","authors":"Daniel Tyler, Jing Kang, Hock Hoe Goh","doi":"10.1177/14653125231173708","DOIUrl":"10.1177/14653125231173708","url":null,"abstract":"<p><strong>Objective: </strong>To establish whether the use of a WaterPik^® alongside a manual toothbrush (WaterPik^® + MTB) is more effective for maintaining oral hygiene compared to the use of a manual toothbrush alone (MTB) in patients wearing fixed orthodontic appliances.</p><p><strong>Design: </strong>A single-centre, two-arm, parallel-group, single-blind, randomised controlled clinical trial with a 1:1 allocation ratio.</p><p><strong>Setting: </strong>Orthodontic department at York Hospital, York Teaching Hospitals NHS Foundation Trust, UK.</p><p><strong>Participants: </strong>A total of 40 fit and well participants, aged 10-20 years, being treated with upper and lower fixed orthodontic appliances.</p><p><strong>Methods: </strong>Participants were randomly allocated, using stratified block randomisation, to the control group (MTB) or intervention group '(Waterpik^® + MTB)'. Plaque, gingival and interdental bleeding indices were recorded at baseline, 8 weeks, 32 weeks and 56 weeks. A generalised linear mixed model was used to assess differences between groups.</p><p><strong>Results: </strong>An interim analysis of results was performed with 40 patients recruited and 85% of data collected. The overall mean differences between the groups were as follows: plaque index = 0.199 (<i>P</i> = 0.88, 95% confidence interval [CI] -0.24 to 0.27); gingival index = -0.008 (<i>P</i> = 0.94, 95% CI -0.22 to 0.20); and interdental bleeding index = 5.60 (<i>P</i> = 0.563, 95% CI -13.22 to 24.42). No statistical difference between the two groups was found for any variable. The trial was stopped at this point.</p><p><strong>Conclusions: </strong>In terms of oral hygiene, our study did not find evidence to support the claim of benefit of using a Waterpik^® in addition to a manual toothbrush for patients wearing fixed orthodontic appliances.</p>","PeriodicalId":16677,"journal":{"name":"Journal of Orthodontics","volume":" ","pages":"367-377"},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10693741/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9842143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A new orthodontic force simulation system with a simulated periodontal ligament to measure the delivered force at the root apex.","authors":"Keisuke Tochigi, Kazuhito Arai","doi":"10.1177/14653125231176844","DOIUrl":"10.1177/14653125231176844","url":null,"abstract":"<p><strong>Objective: </strong>To develop a new orthodontic force simulation system with a simulated periodontal ligament (PDL) that enables measurement of the delivered force at the root apex and to clarify the relationship between the applied orthodontic force and the delivered force at the root apex.</p><p><strong>Design: </strong>In vitro study.</p><p><strong>Setting: </strong>Orthodontics department of a university, Tokyo, Japan.</p><p><strong>Methods: </strong>A new orthodontic force simulation system that enables measurement of the force at the root apex of the maxillary central incisor, was developed. Lingual and intrusion movements were simulated with applied orthodontic force at three levels: 50, 100 and 200 gf. The delivered forces at the root apex were compared between the two movements. Furthermore, the ratio of delivered force at the root apex to the applied orthodontic force (the apex force ratio) was calculated.</p><p><strong>Results: </strong>The magnitudes of delivered forces at the root apex were significantly greater in intrusion movement than in lingual movement (<i>P</i> < 0.01). The apex force ratios were in the range of 47.3%-56.2% for lingual movement and 85.6%-86.2% for intrusion movement.</p><p><strong>Conclusion: </strong>The present study, of a newly developed orthodontic force simulation system, showed that the characteristics of the delivered force at the root apex differed according to the direction of tooth movement.</p>","PeriodicalId":16677,"journal":{"name":"Journal of Orthodontics","volume":" ","pages":"378-384"},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9632668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Orthodontic education in the UK: Evolution over the last 50 years and potential future developments.","authors":"Jennifer Haworth, Sally Walker, Anthony Ireland, Jonathan Sandy","doi":"10.1177/14653125231215096","DOIUrl":"10.1177/14653125231215096","url":null,"abstract":"","PeriodicalId":16677,"journal":{"name":"Journal of Orthodontics","volume":"50 1_suppl","pages":"26-33"},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139697715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Eyes wide open to avoid misleading diagnosis and treatment planning.","authors":"Isabela Sales Pinheiro, Marcio José da Silva Campos, Luisa Gatti Reis, Sergio Luiz Mota Júnior, Robert Willer Farinazzo Vitral","doi":"10.1177/14653125221088888","DOIUrl":"10.1177/14653125221088888","url":null,"abstract":"<p><strong>Introduction: </strong>The treatment of impacted and transposed teeth is a challenge for clinical practice. A precise assessment of the relative position of the transposed tooth could lessen the risks of adverse effects, such as root resorption and periodontal problems.</p><p><strong>Description of the case: </strong>An 18-year-old patient went to the Orthodontic Department of the Federal University of Juiz de Fora, Brazil for a re-evaluation of the orthodontic treatment to which she had been receiving since the age of 12. Attempted traction of an impacted maxillary canine resulted in root resorption, marked mobility and alteration in the position of adjacent teeth as well as loss of alveolar bone in the anterior region of the maxilla. This tooth was not only partially transposed, but it also had ankylosis, external and internal tooth resorption, which indicated the need for tooth extraction. A change was made to the treatment plan, with the extraction of the canine, bone graft and mesial movement of the posterior teeth.</p><p><strong>Results: </strong>All the spaces were closed at the end of treatment, with normal overbite and overjet. At the follow-up, the teeth position, the shape of dental arches, disocclusion guides and dental occlusion were preserved. The bone graft in the maxilla showed height and mineral density stability.</p><p><strong>Conclusion: </strong>The presence of the maxillary permanent canines in the dental arch is important for both aesthetics and a functional occlusion. However, despite the importance of their maintenance in the arch, it is well advised that each case be analysed individually.</p>","PeriodicalId":16677,"journal":{"name":"Journal of Orthodontics","volume":"1 1","pages":"385-390"},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46890528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}