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1.
Ned Tijdschr Tandheelkd ; 127(12): 713-718, 2020 Dec.
Artigo em Holandês | MEDLINE | ID: mdl-33367299

RESUMO

Retention plays an important part during orthodontic treatment. Orthodontic treatment can be divided into 2 phases: an active phase in which treatment is carried out with orthodontic appliances and a second, passive phase with retention, with which an attempt is made to prevent a return to the original or another position. In practice, fixed retainers with a retention wire are usually chosen because of the many advantages of such wires. Even though fixed retention is now the gold standard in orthodontic follow-up, it does fail fairly often. In particular, because the procedures for manufacturing and placing are technically sensitive. A number of studies report that on average 34.9% (range of 10.3-47%) of the bonded retention wires come loose after an average of 2 years. A number of factors play a part in this. Based on the literature, it is possible to make some practical recommendations on the lifespan of a retainer.


Assuntos
Colagem Dentária , Contenções Ortodônticas , Humanos , Desenho de Aparelho Ortodôntico
2.
Ned Tijdschr Tandheelkd ; 127(12): 719-726, 2020 Dec.
Artigo em Holandês | MEDLINE | ID: mdl-33367300

RESUMO

The aim of orthodontic retention is to counteract post-treatment changes and thereby to preserve the result of active treatment. For active orthodontic treatment, a certain level of patient compliance is necessary and the same applies for the retention phase. Ideally, the retainer will never fail or get lost, the patient will adhere to all recommendations and will wear the retainer in accordance with the instructions, necessary precautions with the fixed retainer are followed, the patient reports a problem immediately, and appointments for retention check-ups will always be met. Unfortunately, the reality is often different. This article considers the need to provide the patient with information about retention before treatment and the problems that may arise during the retention phase. Recommendations are made on how to avoid these problems as much as possible, and solutions are offered for problems that do arise. Finally, it is made clear how the orthodontist, patient and dentist can be jointly responsible for the retention phase.


Assuntos
Contenções Ortodônticas , Ortodontistas , Agendamento de Consultas , Humanos , Desenho de Aparelho Ortodôntico , Cooperação do Paciente
3.
Evid Based Dent ; 21(4): 146-149, 2020 12.
Artigo em Inglês | MEDLINE | ID: mdl-33339980

RESUMO

Data sources The following electronic databases were searched from 1946 to 31 August 2019: Medline, Embase, the Cochrane Oral Health Group's Trials Register, CENTRAL, ClinicalTrials.gov, the National Research Register and Pro-Quest Dissertation Abstracts and Thesis database.Study selection The following study designs were eligible: randomised controlled trials (RCTs), controlled clinical trials, cohort studies of prospective and retrospective design, and cross-sectional studies that reported periodontal measurements on patients who received fixed retention after orthodontic therapy. Studies irrespective of their language were selected by two reviewers independently.Data extraction and synthesis Data extraction from the selected studies and risk of bias assessments were performed by two reviewers independently. Specific risk of bias tools were used according to the pertinent research designs of the included studies. Criteria for conducting a meta-analysis were not met and a qualitative synthesis was conducted.Results Twenty-nine studies fulfilled the eligibility criteria; that is, 11 RCTs, four prospective cohort studies, one retrospective cohort study and 13 cross-sectional studies. The quality of the evidence was low for most of the studies included in this review. Contrary to the general consensus, two RCTs, one prospective cohort study and two cross-sectional studies identified poorer periodontal health in patients with fixed orthodontic retainers.Conclusions The authors of this systematic review concluded that fixed orthodontic retainers in the majority of the 29 included studies seemed to be a method of retention that is rather compatible with periodontal health, or at least not related to severe detrimental consequences for the periodontium. No recommendations on the best type of fixed retainer to use could be given. High-quality evidence from long-term studies is necessary to provide definitive conclusions on the relationship between fixed retainers and periodontal health.


Assuntos
Aparelhos Ortodônticos Fixos , Contenções Ortodônticas , Estudos Transversais , Humanos , Estudos Prospectivos , Estudos Retrospectivos
4.
Orthod Fr ; 91(3): 179-190, 2020 10 01.
Artigo em Francês | MEDLINE | ID: mdl-33146613

RESUMO

Once the orthodontic retention phase is complete, a number of patients return to the office following retainer detachment or complaining about the stability of the result. The aim of this study was to search for predictors of re-consultation and to evaluate how the choice of retainer impacts re-consultation for misalignment or debonding. A systematic retrospective cohort study was conducted ten years after removal of orthodontic appliances. Of the 380 patients included, 23% re-consulted on average 4.5 years after appliance removal. The patients most likely to re-consult were those with a severe initial aesthetic deficit. Mandibular retainers bonded on six teeth resulted in three-fold more re-consultations than wires bonded exclusively on the canines, but the difference was non-significant. Mandibular retainers bonded on the canines certainly generated significantly more maintenance appointments than the six-teeth retainers, but fewer malposition problems (non-significant result). These results raise questions regarding indications for bonded maxillary retainers as opposed to removable devices and also regarding the management of long-term post-retention follow-up.


Assuntos
Mandíbula , Contenções Ortodônticas , Humanos , Desenho de Aparelho Ortodôntico , Recidiva , Encaminhamento e Consulta , Estudos Retrospectivos
5.
Acta Clin Croat ; 59(1): 3-9, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32724269

RESUMO

The aim was to assess the views and practice of Croatian orthodontists concerning retention protocols. A total of 150 questionnaire copies were distributed, of which 92 were validly completed. The survey included sociodemographic characteristics, practices of informing patients about retention options, commonly used appliances, and reasons for choosing a particular type of retention and treatment duration. Orthodontists informed patients about retention mostly verbally, the retention period was 3-5 years, the choice of method depended on the malocclusion (76%), and the protocol was influenced by clinical experience of the orthodontist (39%). The most commonly used appliance in the maxilla was the vacuum-formed retainer (52%), whereas a combination of fixed and removable retainers was most common in the mandible (34%). Modus of acquiring knowledge, biological reasons (malocclusion type, oral health, treatment outcome, and growth) and the patient's wishes were not a predictor of retention duration or recall frequency. With an increase in orthodontic experience, the duration of retention decreased and orthodontists were more likely to change the duration of retention (p=0.001), as well as the type of retention appliance (p<0.001). In conclusion, retention protocols among Croatian orthodontists were influenced mostly by their clinical experience and clinical situation.


Assuntos
Contenções Ortodônticas , Ortodontistas , Croácia/epidemiologia , Humanos , Desenho de Aparelho Ortodôntico , Padrões de Prática Odontológica , Inquéritos e Questionários
6.
BMC Oral Health ; 20(1): 180, 2020 06 29.
Artigo em Inglês | MEDLINE | ID: mdl-32600325

RESUMO

BACKGROUND: Bonded retainers are widely used as they are esthetically pleasing, easily acceptable, provide greater stability, compliance free and causes no soft tissue irritation and speech problems. Though, fracture and bond failure are their shortcomings. Therefore, the objectives of this study were to evaluate the number of bond failures and type of failure pattern between two types of mandibular canine-canine bonded retainers. METHODS: Total 60 subjects were recruited initially and were assessed for eligibility, out of which 6 were excluded and 2 were lost to follow up. They were randomly divided into two groups. Fiber reinforced composite (FRC) retainers were inserted in group 1 subjects while group 2 subjects received multistranded stainless steel (MSW) retainers. The subjects were recalled after every 3 months over a period of 1 year. Bond failure rate and failure pattern based on adhesive remnant index were evaluated at each visit. The bond failure rate and failure pattern were compared between the two retainers by using Chi-square test. RESULTS: The bond failure rates were 42.94% for FRC retainer and 31.41% for MSW retainer. Hence, total number of bond failures in both retainers were 37.17%. The difference of bond failure between two groups was statistically significant (p = 0.012). Type "0" failure pattern was detected commonly with both types of retainers (p <  0.001). CONCLUSION: Our findings indicate that multistranded stainless steel wire retainer is a superior option to be used for fixed lingual retention in mandibular arch as it exhibited lower bond failure as compared to fiber reinforced composite retainer. Adhesive failure is the most common type of bond failure observed with both types of fixed retainers. TRIAL REGISTRATION: ID NCT03881813 ( https://clinicaltrials.gov/ ); March 19, 2019, retrospective registration.


Assuntos
Colagem Dentária/métodos , Materiais Dentários/química , Desenho de Aparelho Ortodôntico , Contenções Ortodônticas , Adesividade , Adulto , Dente Canino/anatomia & histologia , Esmalte Dentário , Feminino , Humanos , Masculino , Aparelhos Ortodônticos Fixos , Fios Ortodônticos , Estudos Retrospectivos
7.
Oral Health Prev Dent ; 18(1): 633-641, 2020 Jun 08.
Artigo em Inglês | MEDLINE | ID: mdl-32700517

RESUMO

PURPOSE: This retrospective cohort study investigated the long-term effectiveness of one type of maxillary and 2 types of mandibular fixed lingual retainers. MATERIALS AND METHODS: Eighty orthodontic patients in retention for 10-15 years were included. Irregularity index, intercanine width, overjet (OJ) and overbite (OB) were measured on plaster models at 3 occasions: (T1) pre-treatment, (T2) post-treatment and (T3) 10-15 years post-treatment. Analyses assessed the effect of the retainer type and time on mandibular irregularity, intercanine width and retainer failure. RESULTS: In the mandible, the irregularity index increased (0.43 mm) between T2 and T3 for the 0.027" ß-titanium (TMA) retainers bonded to canines only while it was stable (-0.02 mm) for the 0.016" x 0.022" braided stainless steel retainers (SS6) bonded to all six anterior teeth. The intercanine width was relatively stable in both groups during the entire observation period. In the maxilla, the irregularity index was stable between T2 and T3 (+0.07 mm). The intercanine width increased (+2.02 mm) during treatment T1-T2 and was stable (-0.02 mm) in the retention phase T2 to T3. CONCLUSIONS: In the mandible, SS6 retainers were slightly more effective in maintaining alignment compared to the TMA retainers. In the maxilla, the SS4 retainers without canine extensions were effective in maintaining alignment. All retainers were effective in maintaining the intercanine width.


Assuntos
Má Oclusão de Angle Classe II , Maxila , Humanos , Mandíbula , Contenções Ortodônticas , Estudos Retrospectivos
8.
Prog Orthod ; 21(1): 22, 2020 Jun 29.
Artigo em Inglês | MEDLINE | ID: mdl-32596755

RESUMO

BACKGROUND: Long-term retention with fixed retainers with a high success rate seems to be a reasonable solution to minimize or prohibit relapse of orthodontic treatment. METHODS: Two hundred sixty patients between 13 and 30 years old were recruited for this study. The 0.0175 stainless steel twisted wire (G&H Orthodontics, USA) was compared with a single-strand ribbon titanium lingual retainer wire (Retainium, Reliance orthodontics, USA) was used. When treatment was completed, the retainers were bonded from canine to canine in the mandibular arch of the participants. In the follow-up visits, the patients were recalled every 3 months during the 24 months. Detachments, the time of debonding, and side effects were recorded. Statistical analysis was performed by a blinded statistician using a statistical package for Social Science (SPSS, Version20). After descriptive statistics, Kaplan-Meier analysis was performed to measure the survival rates of each retainer. P value < 0.05 was considered as significant. RESULTS: Finally, 138 patients who received twisted wire splint and 112 patients who received ribbon wire were included in the analysis. The average duration of success was about 23 months for twisted wire and ribbon wire, according to the Kaplan-Meier estimates. The analysis showed no significant overall difference between the treatments (p = 0.13). Failure rates in terms of detachments in all groups occurred at the enamel junction, and it was 25 in twisted retainer group (18.1%) and was 10 in ribbon retainer group (8.9%); the Kaplan-Meier analysis test detected a significant difference in the failure rates between the groups (p = 0/006). CONCLUSIONS: Although the conventional twisted stainless steel wire and single-strand titanium flat metal ribbon wire as fixed orthodontic retainers have the same clinical effects, it was shown that the ribbon wire has less failure in terms of detachments.


Assuntos
Colagem Dentária , Fios Ortodônticos , Adolescente , Adulto , Humanos , Desenho de Aparelho Ortodôntico , Aparelhos Ortodônticos Fixos , Contenções Ortodônticas , Aço Inoxidável , Adulto Jovem
9.
J Orofac Orthop ; 81(5): 371-381, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-32472340

RESUMO

AIM: The aim of this study was to evaluate the occlusal force distribution (OFD), individual tooth force (ITF), and occlusal surface area (OSA) of Essix and Hawley retainers, using T­Scan III (Tekscan Inc., South Boston, MA, USA) analysis. MATERIALS AND METHODS: A total of 35 subjects were randomly assigned to one of the retention groups following fixed orthodontic treatment. While 18 of these subjects were provided with Essix retainers, 17 were given Hawley retainers. Computerized occlusal analysis of the patients' dentitions was performed using T­Scan III. The evaluations were made after debonding (T0) and at month 3 (T1), month 6 (T2) and 1 year (T3) after the retention phase. RESULTS: The changes in OFD were significant only in the Hawley group for the left/right half jaws and the right posterior quadrants when comparing the T2-T3 time interval. Also, the differences between the groups were significant only for the left half jaw for the T0-T2 time interval and for the right half jaw when comparing the T0-T2 and the T2-T3 time intervals. The changes in ITF were insignificant within groups, but significant between the groups for tooth 11 and 22. Although there was an increase observed in OSA for both groups, the difference between the groups was insignificant. However, the OSA increase in the Essix group for the left/right anterior quadrants was significant only for the T0-T2 and the T0-T3 time intervals, while in both groups, for the posterior left quadrant, the OSA was insignificant only for the T0-T1 time interval. CONCLUSIONS: Although OSA increased when using both retention appliances, OFD did not change.


Assuntos
Desenho de Aparelho Ortodôntico , Contenções Ortodônticas , Força de Mordida , Dente Canino , Humanos
10.
Am J Orthod Dentofacial Orthop ; 157(4): 533-541, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-32241360

RESUMO

INTRODUCTION: The purpose of this study was to evaluate the occlusal contact area and cast-radiograph evaluation (CRE) score changes in patients with 3 different retention protocols after a 1-year retention period. METHODS: A total of 90 patients with acceptable final occlusion according to American Board of Orthodontics CRE were equally divided into 3 groups according to the retention protocol: upper bonded retainer and lower Essix or bonded retainer (Essix group); upper bonded retainer and Hawley or lower bonded retainer (Hawley group); and upper bonded retainer and lower bonded retainer (bonded retainer group). Digital models were used to assess occlusal contact area changes after a 1-year retention period. The follow-up occlusion models were assessed with the American Board of Orthodontics CRE. RESULTS: Occlusal contact areas increased significantly in the Hawley and bonded retainer groups for all teeth except incisors. The bonded retainer group showed the greatest amount of settling, but differences with the Hawley group were not statistically significant. However, statistically significant decreases in occlusal contact areas were recorded for the Essix group except for incisors. A decrease of CRE scores was seen in the Hawley group, whereas a statistically significant increase was recorded in the Essix group. CONCLUSIONS: Both Hawley and bonded retainers allowed settling of the occlusion during the retention phase, whereas the Essix retainer did not allow relative vertical movement of the posterior teeth. The Hawley group showed improvement in the total CRE score, whereas the Essix group showed worsening.


Assuntos
Oclusão Dentária , Contenções Ortodônticas , Seguimentos , Humanos , Incisivo , Desenho de Aparelho Ortodôntico , Aparelhos Ortodônticos Fixos
11.
J Oral Rehabil ; 47(6): 766-774, 2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-32242981

RESUMO

To evaluate the changes in occlusal surface area (OSA) and occlusal force distribution (OFD) following the wear of Vacuum-formed (VFR), Hawley (HR) and Bonded (BR) retainers, using T-Scan III. A total of 60 subjects using three different maxillary and mandibular orthodontic retainers, VFR (n:20), HR (n:20) and BR (n:20), were included in this study. The changes in OSA and OFD were evaluated using the T-Scan III. The evaluations were made 2 hours after debonding orthodontic appliances (T0) and in the 3rd (T1) and 6th (T2) months of the retention phase. For left (LDA), right (RDA) and posterior dental arches (PDA), intragroup comparison of OSA showed significant increase in the VFR and HR groups at T1-T2 and T0-T2 time intervals and in the BR group at T0-T1 and T0-T2 time intervals. For the anterior dental arch (ADA), only the increase in the HR group at T0-T1 and T0-T2 time intervals was found significant. When compared between the groups, the changes between HR and BR groups detected at T1-T2 time interval for the RDA and at T0-T1 and T0-T2 time intervals for the ADA were found significant. Intragroup comparison of OFD displayed significant changes only in the BR group. At T0-T1 time interval, the decrease in the ADA and the increase in the PDA were found significant. Also, intergroup OFD comparison exhibited significant differences between HR and BR groups at T0-T1 time interval for ADA and PDA. Although no significant differences were found between the VFR group, the increase in OSA occurred faster in the PDA in the BR group, whereas in the ADA it was significant only in the HR group.


Assuntos
Força de Mordida , Desenho de Aparelho Ortodôntico , Humanos , Aparelhos Ortodônticos Fixos , Contenções Ortodônticas , Vácuo
12.
J Orthod ; 47(1): 47-54, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-32009494

RESUMO

OBJECTIVE: To compare young people's experiences of wearing a range of orthodontic appliances. DESIGN: A cross-sectional, qualitative study with purposive sampling. SETTING: UK dental teaching hospital. PARTICIPANTS: Twenty-six orthodontic patients aged 11-17 years. METHODS: Patients participated in in-depth semi-structured interviews. All interviews were transcribed verbatim and analysed thematically. RESULTS: Young people reported physical, practical and emotional impacts from their appliances. Despite these reported impacts, participants described 'getting used' to and, therefore, not being bothered by their appliance. Framework analysis of the data identified a multi-dimensional social process of managing everyday life with an appliance. This involves addressing the 'dys-appearance' of the body through physically adapting to an appliance. This process also includes psychological approaches, drawing on social networks, developing strategies and situating experiences in a longer-term context. Engaging in this process allowed young people to address the physical, practical and emotional impacts of their appliances. CONCLUSION: This qualitative research has identified how young people manage everyday life with an appliance. Understanding this process will help orthodontists to support their patients.


Assuntos
Aparelhos Ortodônticos Funcionais , Aparelhos Ortodônticos Removíveis , Adolescente , Criança , Estudos Transversais , Emoções , Humanos , Aparelhos Ortodônticos , Aparelhos Ortodônticos Fixos , Contenções Ortodônticas , Pesquisa Qualitativa
13.
Am J Orthod Dentofacial Orthop ; 157(2): 156-164.e17, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-32005466

RESUMO

INTRODUCTION: The objective of this systematic review was to assess the available evidence in the literature for the effects of fixed orthodontic retainers on periodontal health. METHODS: The following databases were searched up to August 31, 2019: Medline, EMBASE, the Cochrane Oral Health Group's Trials Register, CENTRAL, ClinicalTrials.gov, the National Research Register, and Pro-Quest Dissertation Abstracts and Thesis database. Randomized controlled trials (RCTs), controlled clinical trials, cohort studies of prospective and retrospective design, and cross-sectional studies reporting on periodontal measurements of patients who received fixed retention after orthodontic treatment were eligible for inclusion. The quality of the included RCTs was assessed per the revised Cochrane risk of bias tool for randomized trials (RoB 2.0), whereas the risk of bias of the included cohort studies was assessed using the Risk Of Bias In Nonrandomized Studies of Interventions tool. A modified version of the Newcastle-Ottawa scale was used for cross-sectional studies. RESULTS: Eleven RCTs, 4 prospective cohort studies, 1 retrospective cohort study, and 13 cross-sectional studies fulfilled the inclusion criteria. The quality of evidence was low for most of the included studies. In contrast to the general consensus, 2 RCTs, 1 prospective cohort study, and 2 cross-sectional studies reported poorer periodontal conditions in the presence of a fixed retainer. The results of the included studies comparing different types of fixed retainers were heterogeneous. CONCLUSIONS: According to the currently available literature, orthodontic fixed retainers seem to be a retention strategy rather compatible with periodontal health, or at least not related to severe detrimental effects on the periodontium.


Assuntos
Contenções Ortodônticas , Doenças Periodontais , Estudos Transversais , Humanos , Estudos Prospectivos , Estudos Retrospectivos
14.
J Dent ; 94: 103281, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-31987979

RESUMO

OBJECTIVE: Diligent wear of removable orthodontic retainers requires prolonged adherence and is invariably necessary to preserve optimal results. Patient-informed behaviour-change interventions represent a promising and novel means of enhancing adherence to removable retainer wear. The aim of this study was to describe the development of a patient-informed mobile application designed to enhance retainer wear. METHODS: App development encompassed consideration of participant preferences, social media posts, available interventions and behaviour change theories. Qualitative methods including analysis of publicly-available retainer-related posts on Twitter (n = 827) and one-to-one interviews were undertaken. Audio-recorded one-to-one interviews were undertaken to identify patient preferences in relation to features, content and design of the application. A criterion-based purposive sample of participants wearing vacuum-formed retainers for at least 4 years was used (n = 15). Thematic analysis of transcribed data was undertaken. These data were triangulated to inform design and content of the application. RESULTS: The need to facilitate communication with the treating clinician, responsive reminder and tracking systems, and access to useful and engaging written and visual information, in addition to other personalised and interactive features were considered important. Concerns related to retainer wear shared on Twitter informed an exhaustive list of frequently-asked questions. Application features were mapped to relevant theoretical constructs. Determinants of existing behavioural change theories were also used to link application features to retainer wear and maintenance. CONCLUSIONS: A holistic process involving both patient and professional input can be useful in informing the development of mobile applications. The orthodontic application ("My Retainers") will undergo further scrutiny in relation to its effectiveness in inducing behavioural change and concerning patient experiences prior to finalisation.


Assuntos
Contenções Ortodônticas , Mídias Sociais , Humanos , Desenho de Aparelho Ortodôntico , Projetos de Pesquisa , Vácuo
15.
Am J Orthod Dentofacial Orthop ; 157(1): 128-131, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-31901270

RESUMO

Preservation of the maxillary lateral incisor space after orthodontic treatment in an adolescent patient traditionally requires the use of a retainer with a lateral pontic, commonly referred to as a "flipper," which is minimally effective in the long term. This article illustrates a technique for chairside fabrication of a Maryland bridge retainer for semi-permanent retention. A stainless steel braided palatal wire is bonded to the anterior teeth. A pontic is then built intraorally with flowable composite, using the palatal wire as scaffolding. The retainer is maintained until the patient is of age for a more permanent restoration.


Assuntos
Prótese Adesiva , Adolescente , Humanos , Desenho de Aparelho Ortodôntico , Contenções Ortodônticas , Fios Ortodônticos
16.
Eur J Orthod ; 42(1): 86-92, 2020 Jan 27.
Artigo em Inglês | MEDLINE | ID: mdl-31323673

RESUMO

OBJECTIVE: This cross-sectional study aimed to explore the level of knowledge and expectations people deciding on a future orthodontic treatment have about post-orthodontic retention and to investigate the influence of sociocultural characteristics. MATERIAL AND METHODS: A total of 227 consecutive people involved as legal decision maker (as patient, parent, or legal guardian) for a prospective orthodontic treatment (mean age 37.1 years; 37.3 per cent male) received before their first appointment a questionnaire to assess their knowledge and expectations about post-orthodontic retention. Data were analysed descriptively, whereas predictors were identified with logistic regressions at P value of less than or equal to 0.05. RESULTS: Among the 220 responders, 46.3 per cent (n = 99) knew that retention appliances are used after orthodontic treatment and 52.8 per cent (n = 113) believed perfect results can guarantee stability, whereas at the same time, 77.8 per cent (n = 168) knew that teeth can move on their own without any orthodontic appliances. The majority considered stability of the orthodontic result important or extremely important (94.5 per cent; n = 206), preferred bonded over removable retainers (67.2 per cent; n = 133), believed the orthodontist to be primarily responsible for a stable result (73.2 per cent; n = 158), and found it appropriate to charge for recall visits (72.9 per cent; n = 153). Participants' gender, age, education, nationality, and past orthodontic experiences within the close family significantly influenced answers. LIMITATIONS: The setting of a single-centred survey conducted in one university moderates the generalizability of the portrayed results. CONCLUSIONS: Although stability of orthodontic treatment results is very important to people deciding about a prospective orthodontic treatment, knowledge regarding the need for post-orthodontic retention varies and may at times be contradictious. Sociocultural factors seem to influence the level of knowledge and the expectations on post-orthodontic retention.


Assuntos
Tomada de Decisões , Contenções Ortodônticas , Ortodontistas , Educação de Pacientes como Assunto , Adulto , Estudos Transversais , Feminino , Humanos , Consentimento Livre e Esclarecido , Masculino , Estudos Prospectivos , Inquéritos e Questionários
17.
Eur J Orthod ; 42(1): 52-59, 2020 Jan 27.
Artigo em Inglês | MEDLINE | ID: mdl-31329861

RESUMO

AIMS: To identify if lower incisor movements after orthodontic treatment are due to the relapse of the orthodontic treatment or due to natural growth. SUBJECTS AND METHODS: The subjects consisted of 92 patients who have had orthodontic treatment, divided into three groups, group 1: 38 individuals had no retainer in the lower jaw. Group 2: 24 individuals had a retainer 0.028 inch, a spring hard wire bonded to the mandibular canines only. Group 3: 30 individuals had a 0.0195-inch Twist-Flex wire, bonded to all mandibular incisors and canines. Study models before orthodontic treatment (T0), immediately after orthodontic treatment (T1), 6 years after orthodontic treatment (T2), and 12 years after orthodontic treatment (T3) were used for the measurements. The wires in groups 2 and 3 were removed after mean 2.6 years (SD 1.49). Little Irregularity Index (LII), inter-canine distance, available mandibular anterior space, and number of crowded incisors were registered. A Tooth Displacement Index (TDI) was developed to measure the tooth displacement directions at T0 and T3. RESULTS: The LII showed equal values before treatment (T0) and at the follow-up registrations (T2 and T3). But about 25 per cent of the tooth displacements at T2 and T3 did not exist before treatment, at T0. This indicates usual growth changes and not relapse of the orthodontic treatment. CONCLUSION: As about 25 per cent of the displaced incisors can be considered as an effect of natural growth, not a relapse of the orthodontic treatment, it is valuable to use a displacement index in combination with other variables for investigations of stability after orthodontic treatment. Importance of the present study is that it is possible to differ between relapse and usual growth changes.


Assuntos
Arco Dental , Contenções Ortodônticas , Técnicas de Movimentação Dentária , Seguimentos , Humanos , Incisivo , Má Oclusão , Recidiva , Resultado do Tratamento
18.
Angle Orthod ; 90(1): 125-143, 2020 01.
Artigo em Inglês | MEDLINE | ID: mdl-31536378

RESUMO

OBJECTIVE: To evaluate the stability after orthodontic treatment between two types of lower fixed retainers: those bonded onto all anterior teeth or those bonded only onto the canines. MATERIALS AND METHODS: The following electronic databases were consulted: PubMed, Scopus, Web of Science, Cochrane Library, Lilacs, OpenGrey, ClinicalTrials, and Google Scholar. No restriction of language or year were applied. After selection of studies, risk-of-bias evaluation and qualitative synthesis of the included studies were performed using The Cochrane Collaboration's tool for randomized studies and the "Risk of Bias in Non-randomized Studies of Interventions" (ROBINS-I) tool for nonrandomized studies, and a summary of the overall strength of evidence was presented using the "Grading of recommendations, assessment, development and evaluation" tool. RESULTS: Among the 180 studies retrieved from the searches, five were included in this review. Three of them showed a low risk of bias, while two presented a high risk of bias. With regard to stability, two studies reported better stability for retainers bonded to all six teeth, while the other three showed no difference. The retainer bonded to all teeth presented a higher breakage rate in one study. CONCLUSIONS: Stability seems better with lower fixed retainers bonded on all anterior teeth. The breakage rate may not change according to the bonding. However, studies with greater methodological soundness are necessary to reach a more reliable conclusion.


Assuntos
Colagem Dentária , Aparelhos Ortodônticos Fixos , Contenções Ortodônticas , Dente Canino , Humanos
19.
J Orthod ; 47(1): 72-77, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-31697179

RESUMO

INTRODUCTION: Retention is a crucial part of orthodontic treatment; however, patients often do not wear their retainers as advised. The British Orthodontic Society developed the 'Hold that Smile' campaign in 2017, to improve patient knowledge about retention. Information is provided in two formats: a cartoon and a conventional film. OBJECTIVE: To assess whether patients find the 'Hold that Smile' videos useful and whether they improved patients' intended retainer wear. The gold standard was that 90% of patients should intend to wear their retainers in the long term after watching the videos. DESIGN: National multicentre audit. SETTING: Nine units in the UK. METHODS: Patients aged ⩾ 10 years, in fixed appliances or retention, watched the retainer videos and then completed a questionnaire that was designed specifically for this audit. Each unit collected data for approximately 30 patients. RESULTS: Data were collected for 278 patients in total. The average age was 17.9 years; 64.4% of patients were female and 35.6% were male. Most patients (86.3%) watched both videos and, of these, 44.1% preferred the film, 31.3% preferred the cartoon and 24.6% had no preference. The majority of patients (81.3%) felt that the film provided them with new information, compared with a lower percentage (48.5%) for the cartoon. More patients said they would recommend the film (76.3%) compared with the cartoon (63.3%). Before watching the videos, 77.0% of patients felt they knew about long-term retainer wear and 74.3% of those intended to wear their retainers in the long term. After watching the videos, 96.4% of all patients thought they would now wear their retainers long term. CONCLUSION: After watching the videos, there was a notable increase in the number of patients planning to wear their retainers long term and the gold standard was met. Therefore, these videos may be beneficial in improving understanding and compliance with retention.


Assuntos
Contenções Ortodônticas , Sociedades Odontológicas , Adolescente , Pré-Escolar , Feminino , Humanos , Masculino , Desenho de Aparelho Ortodôntico , Cooperação do Paciente , Sorriso , Inquéritos e Questionários
20.
Angle Orthod ; 90(1): 63-68, 2020 01.
Artigo em Inglês | MEDLINE | ID: mdl-31335161

RESUMO

OBJECTIVE: To compare the level of satisfaction in the use of wraparound Hawley and thermoplastic maxillary retainers. MATERIALS AND METHODS: The study sample included 70 orthodontic patients (24 males and 46 females), who were in the retention stage (mean age = 20.80 years). All patients wore the two types of maxillary retainer for 1 month each, along with a 3×3 fixed mandibular retainer. After the use of each retainer, the patients responded to a questionnaire evaluating the level of satisfaction with their use of the maxillary retainer. Intergroup comparison was performed by independent t tests. Chi-square test was used to evaluate preference for the type of retainer by gender. RESULTS: The thermoplastic retainer was better for swallowing and the wraparound Hawley appliance was better for hygiene and durability. The other factors evaluated (adaptation, speech, comfort, esthetics, satisfaction, and fitting) did not show significant differences between the retainers. There was also no significant difference in preference for the appliances. CONCLUSIONS: Regarding the overall satisfaction and the preference, there was no difference between the wraparound Hawley and thermoplastic retainers. The wraparound Hawley appliance was better in hygiene and resistance than the thermoplastic retainer; and the thermoplastic appliance was better than the wraparound Hawley for swallowing fluids and saliva.


Assuntos
Estética Dentária , Contenções Ortodônticas , Satisfação Pessoal , Adulto , Feminino , Humanos , Masculino , Mandíbula , Maxila , Desenho de Aparelho Ortodôntico , Adulto Jovem
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