{"title":"Breakage incidence with direct-bonded lingual retainers.","authors":"K W Lumsden, G Saidler, J H McColl","doi":"10.1093/ortho/26.3.191","DOIUrl":"https://doi.org/10.1093/ortho/26.3.191","url":null,"abstract":"<p><p>This study examined the effects of a number of patient and clinical variables on the breakage of bonded retainers, and consisted of a retrospective review of the survival of 200 bonded retainers. Data was collected from two clinical centres between November 1996 and February 1997. The subjects comprised 198 patients of both sexes divided into three age groups. Retainers at both centres were made in 018-inch co-axial wire with Relyabond and Helioprogress adhesives used at each respective centre. The effects on time to first breakage of adhesive, patient sex, and arch (upper/lower) were considered using Kaplan Meier survival graphs and in Log Rank Tests. Finally, a Cox Proportional Hazard Model was used to examine the joint effects of these factors and the patients' ages. Breakage over a 5-year period with Relyabond was 38.8 per cent upper, 22.1 per cent lower, and with Helioprogress 75 per cent upper and 23.2 per cent lower. Breakage appears to be unrelated to the materials used or to the age and sex of the patients. Upper retainers break more often than lowers (P = 0.016) and early breakage is more likely to occur at an adhesive pad than at a wire (9.6 versus 2.5 per cent within 6 months).</p>","PeriodicalId":75621,"journal":{"name":"British journal of orthodontics","volume":"26 3","pages":"191-4"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1093/ortho/26.3.191","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21394411","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":"How do current Senior Registrar job profiles relate to proposed Specialist Registrar FTTA posts? Fixed-term training appointments.","authors":"M Stern, E O'Higgins","doi":"10.1093/ortho/26.3.235","DOIUrl":"https://doi.org/10.1093/ortho/26.3.235","url":null,"abstract":"<p><p>The proposed United Kingdom training pathway for Orthodontic Specialist Registrars is now accepted to be of 3 years duration. In the final year, Specialist Registrars will take the Membership in Orthodontics, with the end point of training marked by the award of the Certificate of Completion on Specialist Training (CCST). There will be a predetermined number of fixed-term training appointments (FTTAs), available through competitive entry, which will provide 2 years of additional training and lead to eligibility to apply for a Consultant appointment. The end point of the Specialist Registrar (FTTA) will be marked by the Intercollegiate Specialty Examination (ISE). The current 3-year Senior Registrar orthodontic training will be reduced to 2 years as the transition to the Specialist Registrar FTTA grade occurs. In the light of these changes, a survey of full time NHS Senior Registrar posts was carried out to examine current job profiles with particular reference to their suitability for assimilation into the Specialist Registrar (FTTA) grade and preparation for the ISE.</p>","PeriodicalId":75621,"journal":{"name":"British journal of orthodontics","volume":"26 3","pages":"235-41"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1093/ortho/26.3.235","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21394266","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":"An investigation into the changes in airway dimension and the efficacy of mandibular advancement appliances in subjects with obstructive sleep apnoea.","authors":"A Johal, J M Battagel","doi":"10.1093/ortho/26.3.205","DOIUrl":"https://doi.org/10.1093/ortho/26.3.205","url":null,"abstract":"<p><p>This prospective clinical study evaluates a group of 37 male Caucasians with obstructive sleep apnoea for changes in airway dimension and the efficacy associated with the use of mandibular advancement splints. Lateral skull radiographs were obtained with the subjects--upright in occlusion, supine in occlusion, and supine in protrusion. Each radiograph was traced and digitized, and changes in mandibular position, airway dimensions, and hyoid were examined. Subjects were invited to complete pre- and post-treatment questionnaires, and interviewed following fitting of a removable Herbst mandibular advancement splint. Significant changes were recorded in the airway dimensions in response to both a change in position, from upright to supine, and in response to mandibular advancement. A compliance rate of 76 per cent was achieved with no reported serious complications associated with the use of mandibular advancement devices.</p>","PeriodicalId":75621,"journal":{"name":"British journal of orthodontics","volume":"26 3","pages":"205-10"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1093/ortho/26.3.205","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21394413","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":"Countdown to contract. Is NHS orthodontics finished?","authors":"M Brown","doi":"10.1093/ortho/26.3.253","DOIUrl":"https://doi.org/10.1093/ortho/26.3.253","url":null,"abstract":"","PeriodicalId":75621,"journal":{"name":"British journal of orthodontics","volume":"26 3","pages":"253-4"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1093/ortho/26.3.253","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21435447","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":"The controversy over how to present research findings.","authors":"R G Newcombe","doi":"10.1093/ortho/26.3.233","DOIUrl":"https://doi.org/10.1093/ortho/26.3.233","url":null,"abstract":"","PeriodicalId":75621,"journal":{"name":"British journal of orthodontics","volume":"26 3","pages":"233-4"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1093/ortho/26.3.233","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21394265","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":"New contracts for specialist orthodontic practitioners?","authors":"J Renshaw","doi":"10.1093/ortho/26.3.255","DOIUrl":"https://doi.org/10.1093/ortho/26.3.255","url":null,"abstract":"<p><p>This paper discusses the possibility of new forms of contacting or commissioning emerging between UK Health Authorities (or other parties such as Primary Care Groups and Primary Care Trusts) and established providers of specialist orthodontic services.</p>","PeriodicalId":75621,"journal":{"name":"British journal of orthodontics","volume":"26 3","pages":"255-7"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1093/ortho/26.3.255","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21394271","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":"Rapid palatal expansion in treatment of Class II malocclusions.","authors":"A Giancotti, A Maselli, R Di Girolamo","doi":"10.1093/ortho/26.3.179","DOIUrl":"https://doi.org/10.1093/ortho/26.3.179","url":null,"abstract":"<p><p>A technique which combines the use of rapid maxillary expansion and fixed appliance in growing patients, is presented. The treatment in three patients with Class II division 1 malocclusion and different skeletal patterns is described, and relative advantages highlighted.</p>","PeriodicalId":75621,"journal":{"name":"British journal of orthodontics","volume":"26 3","pages":"179-90"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1093/ortho/26.3.179","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21394410","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 5-year post-operative review of secondary alveolar bone grafting in the Yorkshire region.","authors":"J Kindelan, D Roberts-Harry","doi":"10.1093/ortho/26.3.211","DOIUrl":"https://doi.org/10.1093/ortho/26.3.211","url":null,"abstract":"<p><p>The objective of this study was to determine the quality of secondary alveolar bone grafting in the Yorkshire region, and consisted of a retrospective review of patients case notes and radiographs at five surgical units within the Yorkshire region. The subjects were 109 patients who had secondary alveolar bone grafting between 1.9.91. and 31.8.96. The quality of outcome was assessed using a four-point radiographic scale from occlusal radiographs taken at least 3 months post-operatively: Grade 1 = > 75 per cent bony in-fill, Grade 2 = 50-75 per cent bony in-fill, Grade 3 = < 50 per cent bony in-fill, and Grade 4 = no bony bridge. The radiographic assessment scale was assessed for reliability: inter-examiner weighted kappa = 0.622-0.715 and intra-examiner = 0.818-0.943. Grade 1 results were achieved in 63.2 per cent patients receiving orthodontic expansion and in 40 per cent without expansion before grafting. The four-point radiographic scale described is a useful tool in assessing alveolar bone grafting, Orthodontic expansion.</p>","PeriodicalId":75621,"journal":{"name":"British journal of orthodontics","volume":"26 3","pages":"211-7"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1093/ortho/26.3.211","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21394414","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}