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[PMID]:29172323
[Au] Autor:Kalantzis E; Waring DT; Malik OH
[Ti] Título:A Predictable Alternative to a Smile in Six Months?
[So] Source:Dent Update;44(3):190-2, 195-8, 2017 Mar.
[Is] ISSN:0305-5000
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The aim of this article is to explore the use of Incognito™ Lite as an alternative to competitors advertising a 'Smile in Six Months' or rather short-term orthodontics for improving dental appearance through tooth movement. The focus is on the varied clinical use of this appliance system and its comparative advantages, disadvantages and placement techniques. Some alternatives are discussed and appraised. Two cases successfully treated with Incognito™ Lite are then presented. Clinical relevance: A reliable and predictable tool for aesthetic alignment of teeth, creating a broader range of treatment options for both the clinician and the patient.
[Mh] Termos MeSH primário: Estética Dentária
Má Oclusão/terapia
Aparelhos Ortodônticos
Técnicas de Movimentação Dentária/instrumentação
[Mh] Termos MeSH secundário: Adulto
Feminino
Seres Humanos
Desenho de Aparelho Ortodôntico
Sorriso
Fatores de Tempo
Adulto Jovem
[Pt] Tipo de publicação:CASE REPORTS; JOURNAL ARTICLE
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180123
[Lr] Data última revisão:
180123
[Sb] Subgrupo de revista:D
[Da] Data de entrada para processamento:171128
[St] Status:MEDLINE


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[PMID]:28742420
[Au] Autor:Penning EW; Peerlings RHJ; Govers JDM; Rischen RJ; Zinad K; Bronkhorst EM; Breuning KH; Kuijpers-Jagtman AM
[Ad] Endereço:1 Department of Orthodontics and Craniofacial Biology, Radboud University Medical Center, Nijmegen, the Netherlands.
[Ti] Título:Orthodontics with Customized versus Noncustomized Appliances: A Randomized Controlled Clinical Trial.
[So] Source:J Dent Res;96(13):1498-1504, 2017 Dec.
[Is] ISSN:1544-0591
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:This randomized controlled trial aimed to evaluate the duration and outcome quality of orthodontic treatment with a customized fixed appliance system versus a noncustomized system. Patients ( n = 180) were randomized and received orthodontic treatment with the Insignia customized orthodontic system or the Damon Q noncustomized orthodontic system. The allocation sequence was concealed using identical, sequentially numbered, opaque, sealed envelopes. Patients with nonextraction treatment plans were treated by 2 equally experienced orthodontists. Pretreatment and posttreatment plaster casts were made for each patient, and the models were rated using the Peer Assessment Rating (PAR) score. Planning time, treatment duration, and numbers of loose brackets, visits, and complaints were recorded. The examined null hypothesis was that the customized appliance system was not associated with significantly ( P < 0.05) shorter treatment duration compared to a noncustomized appliance. We analyzed 85 patients in the customized group and 89 in the noncustomized group. Treatment duration was 1.29 ± 0.35 y in the customized group and 1.24 ± 0.37 y in the noncustomized group. In the customized group, the PAR score was 23.32 ± 9.15 pretreatment and 5.38 ± 3.75 posttreatment. In the noncustomized group, the PAR score was 21.84 ± 7.95 pretreatment and 5.93 ± 3.58 posttreatment. None of these outcomes significantly differed between groups. On the other hand, the orthodontist had a significant effect on treatment duration, quality of treatment outcome, and number of visits ( P < 0.05). A higher PAR score pretreatment was associated with increased treatment duration, posttreatment PAR, and number of visits ( P < 0.05). Compared to the noncustomized group, the customized group had more loose brackets, a longer planning time, and more complaints ( P < 0.05). The customized orthodontic system was not associated with significantly reduced treatment duration, and treatment quality was comparable between the 2 systems ( ClinicalTrials.gov : NCT01268852).
[Mh] Termos MeSH primário: Desenho de Aparelho Ortodôntico
Ortodontia Corretiva/instrumentação
[Mh] Termos MeSH secundário: Adolescente
Pesquisa Comparativa da Efetividade
Feminino
Seres Humanos
Masculino
Países Baixos
Resultado do Tratamento
[Pt] Tipo de publicação:JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
[Em] Mês de entrada:1712
[Cu] Atualização por classe:180124
[Lr] Data última revisão:
180124
[Sb] Subgrupo de revista:D; IM
[Da] Data de entrada para processamento:170726
[Cl] Clinical Trial:ClinicalTrial
[St] Status:MEDLINE
[do] DOI:10.1177/0022034517720913


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[PMID]:29287658
[Au] Autor:Miles P; Fisher E; Pandis N
[Ad] Endereço:Center for Orthodontics, Seton Hill University, Greensburg, Pa; private practice, Caloundra, Queensland, Australia. Electronic address: pmiles@newwaveorthodontics.com.au.
[Ti] Título:Assessment of the rate of premolar extraction space closure in the maxillary arch with the AcceleDent Aura appliance vs no appliance in adolescents: A single-blind randomized clinical trial.
[So] Source:Am J Orthod Dentofacial Orthop;153(1):8-14, 2018 Jan.
[Is] ISSN:1097-6752
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:INTRODUCTION: The purpose of this 2-arm parallel trial was to assess the effect of the AcceleDent Aura appliance (OrthoAccel Technologies, Houston, Tex) on the rate of maxillary premolar extraction space closure in adolescent patients. METHODS: Forty Class II adolescents treated with full fixed appliances and maxillary premolar extractions participated in this randomized clinical trial. They were recruited in a private practice and treated by 1 clinician. Randomization was accomplished in blocks of 10 patients assigned to either a no-appliance group or the AcceleDent Aura appliance group with the allocations concealed in opaque, sealed envelopes. Both the operator and the outcome assessor were blinded; however, it was not feasible to blind the patients. Models were taken of the maxillary arch at the start of space closure and just before complete space closure. The space was measured parallel to the occlusal plane from the cusp tips of the teeth mesial and distal to the extraction spaces. RESULTS: There was no clinically (0.05 mm per month; 95% confidence interval [CI], -0.24, 0.34) or statistically significant difference in the rate of space closure (P = 0.74). In both the univariable and multivariable analyses, the mean rate of tooth movement was slower by 0.13 mm per month (95% CI, -.26, .005) on the left side compared with the right side, but this was not statistically significant (P = 0.06). CONCLUSIONS: The AcceleDent Aura appliance had no effect on the rate of maxillary premolar extraction space closure. Only a few participants were considered to be good compliers with the appliance. However, the rate of space closure in the good compliers was similar to the overall group and did not appear to influence the result. REGISTRATION: This trial was not registered. PROTOCOL: The protocol was not published before trial commencement.
[Mh] Termos MeSH primário: Dente Pré-Molar/cirurgia
Aparelhos Ortodônticos
Fechamento de Espaço Ortodôntico
Extração Dentária
[Mh] Termos MeSH secundário: Adolescente
Feminino
Seres Humanos
Masculino
Maxila
Desenho de Aparelho Ortodôntico
Estudos Prospectivos
Método Simples-Cego
Fatores de Tempo
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL; VIDEO-AUDIO MEDIA
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180112
[Lr] Data última revisão:
180112
[Sb] Subgrupo de revista:D; IM
[Da] Data de entrada para processamento:171231
[St] Status:MEDLINE


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[PMID]:29287639
[Au] Autor:Ikeda Y; Kokai S; Ono T
[Ad] Endereço:Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan. Electronic address: ikeda.orts@gmail.com.
[Ti] Título:A patient with mandibular deviation and 3 mandibular incisors treated with asymmetrically bent improved superelastic nickel-titanium alloy wires.
[So] Source:Am J Orthod Dentofacial Orthop;153(1):131-143, 2018 Jan.
[Is] ISSN:1097-6752
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Skeletal and dental discrepancies cause asymmetric malocclusions in orthodontic patients. It is difficult to achieve adequate functional occlusion and guidance in patients with congenital absence of a mandibular incisor due to the tooth-size discrepancy. Here, we describe the orthodontic treatment of a 22-year-old woman with an asymmetric Angle Class II malocclusion, mandibular deviation to the left, and 3 mandibular incisors. The anterior teeth and maxillary canines were crowded. We used an improved superelastic nickel-titanium alloy wire (Tomy International, Tokyo, Japan) to compensate for the asymmetric mandibular arch and an asymmetrically bent archwire to move the maxillary molars distally. A skeletal anchorage system provided traction for intermaxillary elastics, and extractions were not needed. We alleviated the crowding and created an ideal occlusion with proper overjet, overbite, and anterior guidance with Class I canine and molar relationships. This method of treatment with an asymmetrically bent nickel-titanium alloy wire provided proper Class I occlusion and anterior guidance despite the mandibular deviation to the left and 3 mandibular incisors, without the need for extractions.
[Mh] Termos MeSH primário: Incisivo/anormalidades
Má Oclusão de Angle Classe II/terapia
Mandíbula/anormalidades
Níquel
Fios Ortodônticos
Titânio
Dente Supranumerário/terapia
[Mh] Termos MeSH secundário: Feminino
Seres Humanos
Má Oclusão de Angle Classe II/complicações
Desenho de Aparelho Ortodôntico
Ortodontia Corretiva/instrumentação
Ortodontia Corretiva/métodos
Dente Supranumerário/complicações
Adulto Jovem
[Pt] Tipo de publicação:CASE REPORTS; JOURNAL ARTICLE
[Nm] Nome de substância:
12035-60-8 (titanium nickelide); 7OV03QG267 (Nickel); D1JT611TNE (Titanium)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180112
[Lr] Data última revisão:
180112
[Sb] Subgrupo de revista:D; IM
[Da] Data de entrada para processamento:171231
[St] Status:MEDLINE


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[PMID]:29173865
[Au] Autor:Kook YA; Park JH; Bayome M; Jung CY; Kim Y; Kim SH
[Ad] Endereço:Department of Orthodontics, Seoul St. Mary's Hospital, Catholic University of Korea, Seoul, Korea. Electronic address: kook190036@yahoo.com.
[Ti] Título:Application of palatal plate for nonextraction treatment in an adolescent boy with severe overjet.
[So] Source:Am J Orthod Dentofacial Orthop;152(6):859-869, 2017 Dec.
[Is] ISSN:1097-6752
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:A modified C-palatal plate (MCPP) is introduced as a treatment option for adolescent patients with Class I malocclusion and severe overjet. A boy, 10 years 11 months old, was successfully treated without extractions in 22 months. Indications for clinical application of the MCPP as well as procedures and biomechanical analysis of the treatment effects are described in detail. The MCPP was used to distalize the maxillary dentition. The results were stable 1 year after retention. Clinicians should consider the application of MCPP as a nonextraction treatment option for adolescents with Class I malocclusion and severe overjet when the patient or parent refuses extractions.
[Mh] Termos MeSH primário: Má Oclusão de Angle Classe II/terapia
Aparelhos Ortodônticos
Sobremordida/terapia
[Mh] Termos MeSH secundário: Criança
Seres Humanos
Masculino
Desenho de Aparelho Ortodôntico
Palato
Índice de Gravidade de Doença
[Pt] Tipo de publicação:CASE REPORTS; JOURNAL ARTICLE
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171211
[Lr] Data última revisão:
171211
[Sb] Subgrupo de revista:D; IM
[Da] Data de entrada para processamento:171128
[St] Status:MEDLINE


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[PMID]:29173862
[Au] Autor:Çifter M; Gümrü Çelikel AD; Çekici A
[Ad] Endereço:Department of Orthodontics, Faculty of Dentistry, Istanbul University, Istanbul, Turkey. Electronic address: mcifter@yahoo.com.
[Ti] Título:Effects of vacuum-formed retainers on periodontal status and their retention efficiency.
[So] Source:Am J Orthod Dentofacial Orthop;152(6):830-835, 2017 Dec.
[Is] ISSN:1097-6752
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:INTRODUCTION: The stability of treatment results is a major concern in orthodontics. Numerous retention regimens to maintain stability have been introduced. The objectives of this study were to evaluate the effects of vacuum-formed retainers (VFRs) on periodontal tissues and the retention efficiency of VFRs. METHODS: Forty patients were included in this study. Clinical effectiveness of VFRs for nighttime use only over a 12-month period was assessed by using the American Board of Orthodontics' Objective Grading System. Periodontal measurements and indexes were recorded and evaluated immediately after removal of the braces and after 1, 6, and 12 months of VFR use. RESULTS: There was no significant change in the total Objective Grading System score between the end of the active treatment period and the end of the 12-month retention period. However, regarding periodontal measurements, the plaque and gingival indexes decreased, whereas the bleeding on probing, probing depth, calculus index, and clinical attachment loss increased between the evaluated periods. CONCLUSIONS: In terms of periodontal health, the use of VFRs resulted in a slight periodontal attachment loss that seemed to be clinically insignificant, without gingival inflammation or recession. In terms of stability, VFRs were found to be effective in orthodontic retention.
[Mh] Termos MeSH primário: Contenções Ortodônticas
Índice Periodontal
[Mh] Termos MeSH secundário: Adolescente
Criança
Feminino
Seres Humanos
Masculino
Desenho de Aparelho Ortodôntico
Estudos Prospectivos
Resultado do Tratamento
Vácuo
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171211
[Lr] Data última revisão:
171211
[Sb] Subgrupo de revista:D; IM
[Da] Data de entrada para processamento:171128
[St] Status:MEDLINE


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[PMID]:29173854
[Au] Autor:Ulhaq A; Esmail Z; Kamaruddin A; Meadows S; Daus J; Vitale M; Perillo L; Sherriff M; Bister D
[Ad] Endereço:Department of Orthodontics, Edinburgh Dental Institute, Edinburgh, United Kingdom. Electronic address: aman.ulhaq@nhs.net.
[Ti] Título:Alignment efficiency and esthetic performance of 4 coated nickel-titanium archwires in orthodontic patients over 8 weeks: A multicenter randomized clinical trial.
[So] Source:Am J Orthod Dentofacial Orthop;152(6):744-752, 2017 Dec.
[Is] ISSN:1097-6752
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:INTRODUCTION: The objective of this 4-arm parallel study was to evaluate the alignment efficiency and esthetic performance of 4 coated nickel-titanium archwires over an 8-week period. METHODS: Patients in the permanent dentition requiring maxillary and mandibular fixed orthodontic treatment with a preadjusted edgewise appliance were eligible for inclusion. Patients attending 4 hospital departments (United Kingdom and Italy) were randomly allocated to 1 of 4 treatment interventions: (1) BioCosmetic (Forestadent, Pforzheim, Germany), 0.017 in; (2) Titanol (Forestadent), 0.016 in; (3) TP Aesthetic (TP Orthodontics, La Porte, Ind), 0.014 in; and (4) Tooth Tone (Ortho Organizers, Calsbad, Calif) 0.016 in. Block randomization with block sizes of 4 and 8 was used to ensure an allocation ratio of 1:1:1:1. The primary outcome was alignment efficiency determined by the reduction in Little's irregularity index (mm). Secondary outcomes were color change using the Commission Internationale de L'Eclairage L*a*b* system and percentage of coating loss. Blinding was only applicable to outcome assessment of alignment efficiency. Regression models with Sidak's multiple comparison of means were used to analyze the data. RESULTS: One hundred fifty patients (300 dental arches) were allocated to the treatment interventions, including 61 male and 89 female subjects with a mean age of 16.60 years. The average duration of follow-up was 63.65 days. Baseline characteristics for the archwire groups were similar. One patient was lost to follow-up. Five percent (n = 15) of the archwires fractured: BioCosmetic, 5.3% (n = 4); Titanol, 6.8% (n = 5); TP Aesthetic, 5.3% (n = 4); and Tooth Tone, 2.7% (n = 2). We analyzed 283 dental arches for alignment efficiency. There was no statistically significant difference for mean reduction in irregularity between the archwire groups (P = 0.627): BioCosmetic (n = 71), 3.86 mm (95% CI, 3.31-4.41); Titanol (n = 69), 4.51 mm (95% CI, 4.00-5.02); TP Aesthetic (n = 71), 4.13 mm (95% CI, 3.49-4.78); and Tooth Tone (n = 72), 4.21 mm (95% CI, 3.89-4.46). There was a statistically significant difference between archwire groups for color change (P = 0.001) and percentage of coating loss (P = 0.001), with BioCosmetic performing best in both parameters. CONCLUSIONS: There was no difference between the archwires for alignment efficiency. BioCosmetic performed statistically significantly better than did the other groups for both color change and coating loss. REGISTRATION: This trial was registered with the East Midlands NHS Research Ethics Committee (12/EM/0190). PROTOCOL: The protocol was not published before trial commencement.
[Mh] Termos MeSH primário: Estética Dentária
Níquel
Fios Ortodônticos
Titânio
[Mh] Termos MeSH secundário: Adolescente
Adulto
Criança
Feminino
Seres Humanos
Masculino
Meia-Idade
Desenho de Aparelho Ortodôntico
Resultado do Tratamento
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE; MULTICENTER STUDY; RANDOMIZED CONTROLLED TRIAL
[Nm] Nome de substância:
12035-60-8 (titanium nickelide); 7OV03QG267 (Nickel); D1JT611TNE (Titanium)
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171211
[Lr] Data última revisão:
171211
[Sb] Subgrupo de revista:D; IM
[Da] Data de entrada para processamento:171128
[St] Status:MEDLINE


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[PMID]:28962732
[Au] Autor:Watanabe T; Miyazawa K; Fujiwara T; Kawaguchi M; Tabuchi M; Goto S
[Ad] Endereço:Department of Orthodontics, School of Dentistry, Aichi Gakuin University, Nagoya, Japan; private practice, Aichi, Japan. Electronic address: watanabe@o-o-o.co.jp.
[Ti] Título:Insertion torque and Periotest values are important factors predicting outcome after orthodontic miniscrew placement.
[So] Source:Am J Orthod Dentofacial Orthop;152(4):483-488, 2017 Oct.
[Is] ISSN:1097-6752
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:INTRODUCTION: Approximately 14% of orthodontic anchor screws (miniscrews) become dislodged regardless of the accuracy of placement. It is therefore important to investigate the factors causing dislodgement. We evaluated the stability of miniscrews after placement to identify factors influencing outcome in orthodontic treatment using miniscrews. METHODS: We investigated 120 miniscrews (Dual-top Auto Screw III; Jeil Medical, Seoul, Korea) (diameter, 1.4 mm; length, 6 mm) placed on the buccal or lingual side between the maxillary second premolar and the first molar in women. Patient age and rate and time of screw dislodgement were examined. Insertion torque values and Periotest (Tokyo Dental Industrial, Tokyo, Japan) measurements indicating horizontal and vertical mobility of the inserted screws were compared between groups with and without dislodgement (failure and success groups, respectively). RESULTS: Mean insertion torque values were 10.7 ± 1.9 N·cm and 8.5 ± 2.1 N·cm in the failure and success groups, respectively. Cortical bone thickness measurements (success group, 1.34 ± 0.35 mm; failure group, 0.99 ± 0.09 mm) were significantly higher, whereas Periotest values at placement (success group, horizontal, 4.9 ± 1.4; vertical, 4.7 ± 1.3; failure group, horizontal, 7.0 ± 0.8; vertical, 7.1 ± 0.9) were significantly lower in the success group than in the failure group. CONCLUSIONS: The Periotest value, together with insertion torque and cortical bone thickness, could serve as an index of initial stability for predicting the outcome of miniscrew placement.
[Mh] Termos MeSH primário: Aparelhos Ortodônticos
[Mh] Termos MeSH secundário: Adulto
Parafusos Ósseos
Feminino
Seres Humanos
Desenho de Aparelho Ortodôntico
Valor Preditivo dos Testes
Implante de Prótese/métodos
Torque
Resultado do Tratamento
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171019
[Lr] Data última revisão:
171019
[Sb] Subgrupo de revista:D; IM
[Da] Data de entrada para processamento:171001
[St] Status:MEDLINE


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[PMID]:28962727
[Au] Autor:Durrani OK; Shaheed S; Khan A; Bashir U
[Ad] Endereço:Department of Orthodontics, Riphah International University, Islamabad, Pakistan. Electronic address: owais.durrani@riphah.edu.pk.
[Ti] Título:Comparison of in-vivo failure of single-thread and dual-thread temporary anchorage devices over 18 months: A split-mouth randomized controlled trial.
[So] Source:Am J Orthod Dentofacial Orthop;152(4):451-457, 2017 Oct.
[Is] ISSN:1097-6752
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:INTRODUCTION: The purpose of this study was to compare the in-vivo failure rates of single-thread and dual-thread temporary anchorage device (TAD) designs over 18 months. METHODS: Thirty patients with skeletal Class II Division 1 malocclusion requiring anchorage from TADs for retraction of maxillary incisors into the extracted premolar space were recruited in this parallel group, split-mouth, randomized controlled trial. A block randomization sequence was generated with Random Allocation Software (version 2.0; Isfahan, Iran) with the allocations concealed in sequentially numbered, opaque, sealed envelopes. A total of 60 TADs (diameter, 2 mm; length, 10 mm) were placed in the maxillary arches of these patients with random allocation of the 2 types to the left and the right sides in a 1:1 ratio. All TADs were placed between the roots of the second premolar and the first molar and were immediately loaded. Patients were followed for a minimum of 12 months and a maximum of 18 months for the failure of the TADs. Data were analyzed blindly on an intention-to-treat basis. RESULTS: Four TADs (13.3%) failed in the single-thread group, and 6 TADs (20%) failed in the dual-thread group. The McNemar test showed an insignificant difference (P = 0.72) between the 2 groups. An odds ratio of 1.6 (95% confidence interval, 0.39-6.97) showed no significant associations among the variables. Most TADs failed in the first month after insertion (50%). CONCLUSIONS: The failure rate of dual-thread TADs compared with single-thread TADs is statistically insignificant when placed in the maxilla for retraction of the anterior segment. Registration: The trial was not registered before commencement. PROTOCOL: The protocol was not published before the trial.
[Mh] Termos MeSH primário: Procedimentos de Ancoragem Ortodôntica/instrumentação
Aparelhos Ortodônticos
[Mh] Termos MeSH secundário: Adolescente
Falha de Restauração Dentária/estatística & dados numéricos
Feminino
Seres Humanos
Masculino
Desenho de Aparelho Ortodôntico
Falha de Prótese
Fatores de Tempo
Adulto Jovem
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171019
[Lr] Data última revisão:
171019
[Sb] Subgrupo de revista:D; IM
[Da] Data de entrada para processamento:171001
[St] Status:MEDLINE


  10 / 4515 MEDLINE  
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[PMID]:28832715
[Au] Autor:Argalji N; Silva EMD; Cury-Saramago A; Mattos CT
[Ad] Endereço:Universidade Federal Fluminense, Department of Orthodontics, Niterói, RJ, Brazil.
[Ti] Título:Characterization and coating stability evaluation of nickel-titanium orthodontic esthetic wires: an in vivo study.
[So] Source:Braz Oral Res;31:e68, 2017 Aug 21.
[Is] ISSN:1807-3107
[Cp] País de publicação:Brazil
[La] Idioma:eng
[Ab] Resumo:The objective of this study was to compare coating dimensions and surface characteristics of two different esthetic covered nickel-titanium orthodontic rectangular archwires, as-received from the manufacturer and after oral exposure. The study was designed for comparative purposes. Both archwires, as-received from the manufacturer, were observed using a stereomicroscope to measure coating thickness and inner metallic dimensions. The wires were also exposed to oral environment in 11 orthodontic active patients for 21 days. After removing the samples, stereomicroscopy images were captured, coating loss was measured and its percentage was calculated. Three segments of each wire (one as-received and two after oral exposure) were observed using scanning electron microscopy for a qualitative analysis of the labial surface of the wires. The Lilliefors test and independent t-test were applied to verify normality of data and statistical differences between wires, respectively. The significance level adopted was 0.05. The results showed that the differences between the wires while comparing inner height and thickness were statistically significant (p < 0.0001). In average, the most recently launched wire presented a coating thickness twice that of the control wire, which was also a statistically significant difference. The coating loss percentage was also statistically different (p = 0.0346) when the latest launched wire (13.27%) was compared to the control (29.63%). In conclusion, the coating of the most recent wire was thicker and more uniform, whereas the control had a thinner coating on the edges. After oral exposure, both tested wires presented coating loss, but the most recently launched wire exhibited better results.
[Mh] Termos MeSH primário: Materiais Revestidos Biocompatíveis/química
Níquel/química
Desenho de Aparelho Ortodôntico
Fios Ortodônticos
Titânio/química
[Mh] Termos MeSH secundário: Estética Dentária
Seres Humanos
Teste de Materiais
Microscopia Eletrônica de Varredura
Boca/química
Braquetes Ortodônticos
Valores de Referência
Propriedades de Superfície
Fatores de Tempo
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Coated Materials, Biocompatible); 12035-60-8 (titanium nickelide); 7OV03QG267 (Nickel); D1JT611TNE (Titanium)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170912
[Lr] Data última revisão:
170912
[Sb] Subgrupo de revista:D; IM
[Da] Data de entrada para processamento:170824
[St] Status:MEDLINE



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