Journal of Orthodontics最新文献

Introduction: Orthodontic therapy in patients with osteopetrosis (OP) of the jaws has typically been contraindicated owing to the presence of poorly perfused and extremely compact bone, and the potential risk for infection and osteomyelitis. As such, completed orthodontic cases in association with OP, have rarely been published.

Patient concerns: A patient aged 14 years 6 months, with no known diagnosis of OP, sought orthodontic assessment for anterior crowding.

Clinical findings: The patient exhibited a straight facial profile and increased mandibular facial height, competent lips, shallow mentolabial sulcus with mild mentalis strain, flat/reverse smile arc and wide buccal corridors on smiling.Primary diagnosis:The patient had a Class I incisor relationship on Class 1 skeletal bases with bilateral Class I molars and Class II canine relationships. This was complicated by a crossbite involving the lateral incisors and a Bolton discrepancy due to small maxillary lateral incisors. A radiologic assessment revealed polyostotic OP of the oromaxillofacial complex.

Interventions: Treatment consisted of maxillary and mandibular fixed orthodontic therapy, bite turbos and elastics to level and align the dentition. Extractions of permanent teeth were not needed.

Outcomes: At the conclusion of treatment, there was a slight left Class II malocclusion, with incomplete intercuspation on the left side due to tooth size discrepancy, possibly attributed to inadequate elastics compliance and the presence of osteopetrotic bone. The treatment was completed in 3 years, 1 year longer than anticipated.

Conclusion: This report represents the second published account of a patient with OP successfully managed with comprehensive orthodontic care and without osseous complications. Obtaining cephalometric measurements on OP-affected patients may be imprecise owing to the presence of extremely dense bone and difficulty to identify bony landmarks. To reduce osteopetrotic sequelae, attending clinicians should consider reduced exertional orthodontic forces and closely monitor patients for adverse alveolar events.

Objective: To determine if re-establishment of occlusal contact was achieved within 6 months after insertion of a fixed anterior bite plane in individuals with Class II division 2 incisor relationship, and to evaluate the occlusal and vertical skeletal changes and acceptance of the intra-oral scanner and bite plane.

Design: Single-centre two-arm parallel group randomised controlled trial with 1:1 allocation to intervention and control groups.

Setting: Dundee Dental Hospital and Research School, UK.

Participants: A total of 38 participants aged 9-16 years (11 males, 27 females) with Class II division 2 incisor relationship and increased overbite (greater than one-third incisor overlap).

Methods: Participants were randomised to intervention (n = 19) and control (n = 19) groups using block randomisation. The intervention group had a fixed anterior bite plane, and the occlusion and vertical facial dimensions were monitored with intra-oral scans, lateral cephalograms and photographs. The control group received no treatment and occlusal and vertical facial dimensions were monitored with scans and photographs. Questionnaires were completed by participants and parents/carers. An intention-to-treat analysis was planned.

Results: The overbite reduced in all participants in the intervention group (mean initial overbite: 5.07 mm, 95% confidence interval [CI] = 4.15-6.00; mean overbite after 6 months: 2.45 mm, 95% CI = 1.93-2.96). There was a mean incisor intrusion of 0.29 mm (95% CI = 0.17-0.42) and mean eruption of the first molars of 0.23 mm (95% CI = 0.09-0.37). There was no significant change in incisor inclination or vertical skeletal change. Feedback from participants and their parents/carers were generally positive.

Conclusion: Fixed anterior bite planes effectively reduce an increased overbite in adolescents with a Class II division 2 incisor relationship, due to a combination of incisor intrusion and molar eruption with no change in incisor inclination or vertical skeletal change. Intra-oral scanning and fixed anterior bite planes are acceptable in adolescents.

Objective: To obtain an overview of current practice for pre-alveolar bone graft (pre-ABG) orthodontics at cleft centres across the United Kingdom.

Design: Cross-sectional survey.

Setting: Web-based.

Methods: The survey was distributed online to UK orthodontic consultants undertaking cleft care and was piloted before use. The domains explored included level of experience, perceived benefits and concerns with undertaking pre-ABG orthodontics, types of appliances used and ABG outcomes.

Results: A total of 38 consultant orthodontists responded, with a response rate of 56%. Pre-ABG orthodontics was performed most commonly (81.6%) in patients with a bilateral cleft lip and palate; however, 21.1% never performed it in any cleft phenotypes. The most common types of appliances used were fixed slow expanders and fixed appliances. No respondents reported poor ABG outcomes.

Conclusion: There was no clear protocol for providing pre-ABG orthodontic treatment, with wide variation across the UK. A variety of orthodontic treatment approaches are being undertaken, and the outcomes of ABGs remain successful. Multidisciplinary teams should have a holistic approach to patient care when deciding to perform pre-ABG orthodontics and involve patients in decision making. Future UK research should focus on additional secondary outcomes and determining a standardised approach to ensure best possible care is delivered.

Objective: To investigate the impact of written instructions, about post-bonding pain, on patients' pain perception and analgesic consumption and to evaluate the correlation of pain with personality types.

Design: Two-arm parallel randomised controlled trial.

Setting: University Hospital Centre Zagreb, Zagreb, Croatia.

Methods: Participants included adolescents in the permanent dentition with mild or moderate crowding.

Randomisation: The participants were randomly allocated, using computer-generated random list, into two groups.

Interventions: After bonding and archwire insertion, all participants received oral instructions on potential pain occurrence and pain control. Participants in the study group also received written information on post-bonding pain.

Outcomes: Pain intensity was evaluated using the Numerical Rating Scale immediately after (T0), 2 days (T1) and 7 days (T2) after the placement of the fixed orthodontic appliance. Analgesic consumption was assessed as yes or no, and personality traits were assessed using the Big Five Inventory. Operators who scored pain intensity and recorded analgesic consumption and personality traits were blinded to the group allocation. Statistical analyses included the t-test, Mann-Whitney U-test, Spearman correlations and stepwise regression analysis.

Results: The highest rate of pain was recorded at T1 (P < 0.001). No statistically significant difference in pain perception between groups was observed. There was no statistically significant difference in analgesic consumption between the two groups (P = 0.81). The correlations between personality traits and pain perception were not significant.

Conclusion: The additional written information had little impact on pain perception, and it had no relationship to personality types. The perception of pain and analgesic consumption were not affected by the provision of additional written information (P = 0.81). Participants' personality types did not affect the impact of the information given.

Objective: To explore how orthognathic patients seek information during decision-making.

Design: Qualitative, cross-sectional study.

Setting: A hospital in Cumbria, UK.

Participants: Prospective orthognathic patients.

Methods: Participants were purposively recruited from joint orthognathic clinics after the original consultation. Semi-structured interviews were conducted via remote video call with nine participants aged 18-30 years. Data collection and reflexive thematic analysis occurred in parallel until thematic saturation was achieved.

Results: The central finding of this research was that patients were making informed decisions about orthognathic surgery. Four themes were identified to support this central finding including the following: (1) selective engagement with orthognathic information sources; (2) the central role of patient-specific information from professionals and peers; (3) Internet use to supplement standard information resources; and (4) concerns over information found online. The preferred source of information was verbal from the clinical team as it was trusted and person-specific. Past patients were identified as valued sources of information and establishing contact through digital social media networks was found to be a convenient alternative to face-to-face. Online information found was valued but concerns included information overload, problems establishing applicability and concerns over its credibility.

Conclusion: Orthognathic patients were making informed decisions about their treatment. This study highlights the central role of the patient-clinician interaction in decision-making, especially in providing patient-specific information. Insight into the nuances of information-seeking behaviours will better inform clinical care. Since patients frequently access online information that is decision-relevant, encouraging patients to discuss online searches will support the shared decision-making process and alleviate any concerns with information found. During consultation, explaining the purpose of an information aid rather than expecting patients to read them separately, may further enhance its usefulness in decision-making. This study identified an unmet need for visual aids, such as real-time images of postoperative recovery. These findings can inform the design of future information resources.

The aim of this case series was to illustrate the development of late-forming supernumerary teeth (LFST) and highlight the implications for orthodontic treatment. There are limited studies relating to the aetiology, prevalence and treatment of LFST and the cases presented here demonstrate the management of LFST within a tertiary care centre. Five cases are presented, which show various presentations and chronological ages in the development of LFST. This case series emphasises the significance of maintaining a low threshold for suspecting LFST in patients where supernumerary teeth have previously been identified. It also highlights the importance of regular clinical and radiographic reviews. Timely identification can help prevent complications and optimise treatment outcomes.