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1.
Am J Orthod Dentofacial Orthop ; 164(2): e51-e63, 2023 Aug.
Article in English | MEDLINE | ID: mdl-37330727

ABSTRACT

INTRODUCTION: The dental industry is heavily committed to developing more esthetic solutions for orthodontic treatments. Invisalign is a system of transparent orthodontic aligners introduced as an alternative to conventional orthodontic fittings with brackets and metal wires. This study aimed to assess the chemical, physical, mechanical and morphologic changes in these polymeric aligners after exposure to the oral environment. METHODS: Twenty-four Invisalign orthodontic aligners were equally divided into 2 groups: an in vivo aged group in which patients used aligners for 14 days and the reference group, unexposed to the oral environment. Different experimental techniques were used to study the chemical structure, the color changes and translucency, the density and subsequent volume of the aligners, mechanical properties, surface roughness, morphology and elemental composition. The data were subjected to several statistical analyses. RESULTS: Clear orthodontic aligners exhibit chemical stability but undergo a statistically significant optical change in color and translucency. There was a gradual increase in the water absorption rate and the dimensional variation of the polymer, indicating a strong correlation among these factors. The mechanical properties of the polymer showed a statistically significant decrease in its elastic modulus and hardness. There was a slight tendency toward increased surface roughness of the material, but no statistical differences were found between reference and aged groups. The surface morphology of the used aligners demonstrates microcracks, distortions and biofilm formation. CONCLUSION: Intraoral aging adversely affected the physical, mechanical, and morphologic properties of the Invisalign appliance.


Subject(s)
Orthodontic Appliances , Polymers , Orthodontic Appliances/standards , Polymers/chemistry , Polymers/standards , Mouth/chemistry , Chemical Phenomena , Hardness , Color , Time Factors , Humans
2.
Am J Orthod Dentofacial Orthop ; 156(3): 420-428, 2019 Sep.
Article in English | MEDLINE | ID: mdl-31474272

ABSTRACT

INTRODUCTION: This study aimed to test the accuracy of the 3-dimensional (3D) digital dental models generated by the Dental Monitoring (DM) smartphone application in both photograph and video modes over successive DM examinations in comparison with 3D digital dental models generated by the iTero Element intraoral scanner. METHODS: Ten typodonts with setups of class I malocclusion and comparable severity of anterior crowding were used in the study. iTero Element scans along with DM examination in photograph and video modes were performed before tooth movement and after each set of 10 Invisalign aligners for each typodont. Stereolithography (STL) files generated from the DM examinations in photograph and video modes were superimposed with the STL files from the iTero scans using GOM Inspect software to determine the accuracy of both photograph and video modes of DM technology. RESULTS: No clinically significant differences, according to the American Board of Orthodontics-determined standards, were found. Mean global deviations for the maxillary arch ranged from 0.00149 to 0.02756 mm in photograph mode and from 0.0148 to 0.0256 mm in video mode. Mean global deviations for the mandibular arch ranged from 0.0164 to 0.0275 mm in photograph mode and from 0.0150 to 0.0264 mm in video mode. Statistically significant differences were found between the 3D models generated by the iTero and the DM application in photograph and video modes over successive DM examinations. CONCLUSIONS: 3D digital dental models generated by the DM smartphone application in photograph and video modes are accurate enough to be used for clinical applications.


Subject(s)
Data Accuracy , Dental Impression Technique , Image Processing, Computer-Assisted/methods , Imaging, Three-Dimensional/methods , Models, Dental , Computer-Aided Design , Dental Arch , Humans , Malocclusion/diagnostic imaging , Orthodontic Appliances/standards , Orthodontic Appliances, Removable , Orthodontics/standards , Photography, Dental , Smartphone , Software , Stereolithography , Technology, Dental/methods , Tooth Movement Techniques , Video Recording
3.
J Clin Pediatr Dent ; 40(6): 506-509, 2016.
Article in English | MEDLINE | ID: mdl-27805883

ABSTRACT

Lab appliances are an integral part of orthodontics, from active treatment to retention. The quality and fit of an appliance can affect the treatment result and stability. AIMS: This study aims to determine common points of failure in orthodontic appliances, and suggest methods to reduce this rate. METHODS: A survey consisting of 23 questions was distributed to active members of the American Association of Orthodontists (AAO) via Survey Monkey. RESULTS: The most common appliance to need an adjustment was the wrap-around retainer, with the Hawley retainer as a close second. The least common appliance needing adjustment was the Essix/clear retainer. Respondents were asked which component of each appliance was most commonly responsible for an ill-fit. For Hawley and wrap-around retainers, clasps were the most common problem at 50%, whereas spring aligners had two components - clasps and labial bows, both at 38%. Ill-fitting Essix/clear retainers had gingival impingement (52%) closely followed by poor posterior seating (43%). CONCLUSIONS: Communication between the orthodontist and lab technician can be improved by establishing a quality assurance protocol for outgoing and incoming cases. The labial bow of Hawley's, wrap-arounds and spring aligners should be clearly demarcated on the casts. Impressions should be free of distortion and casts should be inspected for accuracy. Clear retainers and positioner should be trimmed to avoid gingival impingement. The type of clasp should be selected based on the anatomy of the teeth, and bands should be checked for accuracy of fit.


Subject(s)
Orthodontic Appliances/standards , Dental Technicians , Dentists , Humans , Interprofessional Relations , Laboratories, Dental , Orthodontic Appliance Design/standards , Orthodontic Retainers/standards , Quality Control
5.
Anon.
In. Anon. Manual de procedimientos para laboratorios de prótesis estomatológicas. La Habana, ECIMED, 2015. .
Monography in Spanish | CUMED | ID: cum-59350
6.
Rev. Clín. Ortod. Dent. Press ; 13(3): 48-60, jun.-jul. 2014. ilus
Article in Portuguese | LILACS, BBO - Dentistry | ID: biblio-855992

ABSTRACT

A inclinação do plano frontal da maxila, quando presente na má oclusão, é, para a maioria dos pacientes, a queixa mais comum, pois causa um impacto negativo na estética facial, e a principal referência estética do paciente é, sem dúvida, seu sorriso. / Objetivo / O presente artigo relata um caso clínico de uma paciente adulta jovem, com má oclusão de Classe II, com acentuada inclinação do plano frontal da maxila. / Métodos / O caso foi, inicialmente, tratado com aparelho de Herbst e finalizado com aparelho fixo e elásticos de Classe II, segundo o protocolo da técnica Straight-Wire Simplificada (SSW). / Conclusão / Essa opção clínica se mostrou uma excelente alternativa para a correção da Classe II com plano oclusal inclinado.


Subject(s)
Humans , Female , Young Adult , Orthodontic Appliances/standards , Facial Asymmetry/therapy , Malocclusion, Angle Class II/therapy , Orthotic Devices/standards , Mandibular Advancement/methods , Gingivoplasty/methods
7.
Rev. Clín. Ortod. Dent. Press ; 12(1): 52-59, fev.- mar. 2013. ilus, tab
Article in Portuguese | LILACS, BBO - Dentistry | ID: lil-681630

ABSTRACT

O tratamento da mordida aberta anterior em pacientes adultos apresenta muitas limitações. A terapia cirúrgica é a mais adequada para esses casos; no entanto, por razões psicológicas, alguns pacientes rejeitam essa forma de tratamento. Diante da necessidade de tratamento desses pacientes, esse artigo se propõe a apresentar um caso de mordida aberta anterior severa tratada com a técnica Multiloop Edgewise Archwire (MEAW). Ao final do tratamento foi atingida oclusão ideal, com função adequada e estética agradável, demonstrando que a técnica aplicada foi efetiva para a correção da mordida aberta anterior, sem cirurgia.


Subject(s)
Humans , Female , Young Adult , Orthodontic Appliances/standards , Open Bite/therapy , Orthodontics, Corrective/methods , Patient Care Planning , Treatment Outcome
8.
Rev. Clín. Ortod. Dent. Press ; 11(6): 28-48, dez.-jan. 2013. ilus
Article in Portuguese | LILACS, BBO - Dentistry | ID: biblio-855907

ABSTRACT

Os aparelhos dentomucossuportados fazem parte do arsenal ortodôntico e/ou ortopédico para o tratamento da atresia maxilar (Haas) e podem estar associados às molas de TMA para correção da relação molar de Classe II por meio de distalização dos dentes superiores, sem depender da cooperação do paciente (Pêndulo, Pendex, T-Rex). Esses aparelhos têm a sua higiene dificultada e, ocasionalmente, promovem lesões à mucosa palatina. O presente artigo tem como objetivo expor uma discussão concernente às intercorrências clínicas relacionadas com a utilização de aparelhos que exibem apoio mucoso e apresentar uma associação do T-Rex ao Hyrax — o aparelho T-Hyrax — como uma alternativa para os casos que requerem a expansão rápida da maxila e a distalização de molares superiores, viabilizando, devido ao arquétipo do aparelho, uma condição de higiene mais favorável e com menores riscos de danos ao palato.


Subject(s)
Orthodontic Appliances/standards , Maxilla/anatomy & histology , Palatal Expansion Technique
9.
Rev. Clín. Ortod. Dent. Press ; 11(1): 79-91, fev.mar. - 2012. ilus
Article in Portuguese | LILACS, BBO - Dentistry | ID: biblio-855871

ABSTRACT

O presente artigo tem o objetivo de descrever, por meio de um caso clínico, a aplicação do aparelho ortopédico fixo híbrido Forsus (3M Unitek, Monrovia) no tratamento de um paciente Padrão II, com deficiência mandibular e relação oclusal de Classe II, 1ª divisão, destacando os cuidados mecânicos, as vantagens e desvantagens dessa abordagem terapêutica. O resultado do tratamento evidenciou a correção da relação sagital de Classe II e do trespasse horizontal, decorrente de compensações dentárias, especialmente na arcada inferior, sem a necessidade de exodontias e dispensando a cooperação do paciente com o uso do aparelho.


Subject(s)
Humans , Male , Child , Orthodontic Appliances/classification , Orthodontic Appliances/standards , Malocclusion, Angle Class II/therapy , Mandibular Advancement/methods
11.
Rev. Clín. Ortod. Dent. Press ; 8(3): 43-49, jun.-jul. 2009. ilus, tab
Article in Portuguese | LILACS, BBO - Dentistry | ID: lil-541928

ABSTRACT

A grande frequência da má oclusão de classe II faz com que essa continue sendo objeto de inúmeros estudos. Vários aparelhos têm sido propostos para a correção dessa má oclusão, entretanto, aqueles que não dependem da colaboração do paciente tornaram-se a escolha preferencial de muitos ortodontistas. Um desses dispositivos é o aparelho de Herbst, que com seu mecanismo telescópio bilateral, mantém a mandíbula posicionada anteriormente de forma contínua, durante todas as funções mandibulares. Dessa forma, por não depender da colaboração do paciente, apresenta como grande vantagem a redução do tempo de tratamento. O objetivo deste trabalho é apresentar o caso clínico de uma paciente com má oclusão de Classe II divisão I com retrusão mandibular, na fase da dentadura mista, que foi tratada com o aparelho de Herbst.


Subject(s)
Humans , Female , Child , Orthodontic Appliances/standards , Dentition, Mixed , Malocclusion, Angle Class II/therapy
12.
Asunción; s.e; 2009.Mar. 71 p. tab.
Monography in Spanish | LILACS, BDNPAR | ID: biblio-1017850

ABSTRACT

En la actualidad el real problema de la ortodoncia es el resultado a largo plazo de los casos tratados. La estabilidad a largo plazo del tratamiento de la mordida abierta anterior en pacientes con la dentición permanente ha sido objeto de numerosas investigaciones, pero aún hoy, no se obtiene resultado concluyente, que pueda guiar al ortodoncista en el éxito del tratamiento de esta maloclusión. La mordida abierta anterior, considerada como el traspase vertical negativo entre los bordes incisales de los dientes superiores e inferiores, es decir que no establecen contacto entre sí, es de etiología multifactorial, por consiguiente de muy difícil diagnóstico tratamiento y estabilidad. La literatura refiere que los casos tratados durante la dentición temporaria y mixta son muy estables; los tratados durante la dentición permanente poseen por lo general mayor índice de recidiva. De ahí el objetivo de la presente revisión sistemática de la literatura existente es; evaluar la estabilidad del tratamiento de la mordida abierta anterior durante la dentición permanente en pacientes tratados con aparatología fija con y sin extracción. El sistema metodológico fue la revisión sistemática de trabajos de investigación obtenido de bases bibliográficas electrónicas como PUBMED, DENTAL PRESS, MEDLINE, COCHRANE entre otros, que contengan estudios cefalométricos y de modelos de los diferentes tipos de control: pre tratamiento (T1), tratamiento (T2), y post tratamiento (T3), teniendo en cuenta además la utilización de tes estadísticos como la T de Studen y Test de Spearman, y los criterios de inclusión y de exclusión, para la selección de los mismos. Las conclusiones y resultados de dichos estudios estadísticos y clínicamente significativos fueron: que 77,8% de estabilidad estadísticamente significante y 73,9% de estabilidad clínica, la evidencia demostró que los casos tratados con extracción fueron más estables con 74,5% que los tratados sin extracción 62,4%, estos...


Subject(s)
Humans , Orthodontic Appliances/standards , Tooth Extraction/trends , Open Bite , Dentistry , Orthodontics , Cephalometry , Diagnosis
13.
Rev Med Liege ; 63(10): 609-14, 2008 Oct.
Article in French | MEDLINE | ID: mdl-19009969

ABSTRACT

This clinical case underlines the importance of a multidisciplinary approach, prosthetic and orthodontic, for the achievement of an oral rehabilitation treatment plan. Preliminary orthodontic treatment has significantly improved, the position of some natural teeth, which can serve or not as a prosthetic abutment. This has produced a direct prosthetic benefit by limiting tissue reduction for preparation and by giving a better biomechanical and functional context to the restoration.Thus, after an orthodontic treatment step, lasting a year and a half, using both removable appliance and fixed appliance, prosthetic rehabilitation was possible. This included a fixed prosthesis and a removable prosthesis that gave a very satisfying an esthetic result and good masticatory function.


Subject(s)
Jaw, Edentulous, Partially/rehabilitation , Malocclusion/therapy , Orthodontics, Corrective/methods , Aged , Dental Bonding/methods , Dental Prosthesis Design , Dental Prosthesis, Implant-Supported/methods , Esthetics, Dental , Humans , Male , Maxilla , Orthodontic Appliance Design , Orthodontic Appliances/standards , Orthodontic Brackets , Treatment Outcome
14.
Ned Tijdschr Tandheelkd ; 114(6): 242-7, 2007 Jun.
Article in Dutch | MEDLINE | ID: mdl-17695210

ABSTRACT

It is the dentists' task to advise their patients what type of mouthguard grants the best possible protection. It is generally accepted that off-the-counter mouthguards are not sufficiently protective. These mouthguards are usually ill-fitting and not worn in the mouth but in the sporting shorts' pocket instead. A custom-fabricated mouthguard is proven to offer maximal protection. A mouthguard has to offer adequate protection with high comfort. A composite laminate construction and space between the inner surface of the mouthguard and the labial surface of the upper front teeth are essential for adequate protection. Transitional dentition and/or orthodontic appliances are no limitation to fabricate a custom-formed mouthguard.


Subject(s)
Dentition, Mixed , Mouth Protectors/standards , Orthodontic Appliances/standards , Tooth Injuries/prevention & control , Equipment Design , Humans , Patient Satisfaction
15.
Rev. Clín. Ortod. Dent. Press ; 4(5): 52-62, out.-nov. 2005. ilus
Article in Portuguese | LILACS, BBO - Dentistry | ID: lil-428048

ABSTRACT

O aparelho versátil MBTtm apresenta como característica um total de sete versatilidades, que constituem uma inovação no conceito dos aparelhos pré-ajustados. Essas características criam uma diretriz que possibilita aos arcos ortodônticos e ao sistema de braquetes e tubos produzirem certas individualizações e compensações necessárias em alguns casos clínicos, com o objetivo de se obter um perfeito posicionamento dentário. A intenção deste artigo é descrever a versatilidade utilizada nos tratamentos ortodônticos, onde os incisivos laterais superiores se encontram em linguoversão


Subject(s)
Adolescent , Male , Female , Humans , Orthodontic Appliances/standards , Incisor/abnormalities , Malocclusion/etiology , Malocclusion/therapy , Torque
16.
J Orofac Orthop ; 66(4): 307-18, 2005 Jul.
Article in English, German | MEDLINE | ID: mdl-16044229

ABSTRACT

Since 1994, the DIN (Deutsches Institut für Normung e.V.) has had a German working group named "Orthodontic Products" working toward establishing standardized norms for orthodontic products. In the USA, a similar working group called "Orthodontic Materials" was established in 1996 at the ADA (American Dental Association). Working at the ISO level since 1997, an international team has been in charge of unifying the standards already set at national levels. It is the aim of this article to report on the current state of standardization in Germany and internationally. The standards already published for wires (DIN 13971, ADA Spec. 32), for brackets and tubes (DIN 13971-2, ADA Spec. 100) and for elastomeric elements (DIN 13901) have been considered, as have problems occurring with ISO standards (ISO/CD 15841 and ISO/CD 15841-2) and DIN 13904-1. We demonstrate that the demands made of these products by the orthodontists who use them have lead to reasonable quality standards. Thanks to clearly-defined testing methods, orthodontic products can now be tested and their compliance with these minimum standards can be compared. In fact, the standards that have been agreed upon help both the product manufacturers and their users to improve product quality and, ultimately, the success of orthodontic treatment.


Subject(s)
Dental Materials/standards , Equipment Failure Analysis/standards , Guidelines as Topic , Materials Testing/standards , Orthodontic Appliances/standards , Product Surveillance, Postmarketing/standards , Reference Standards , Germany , Internationality
19.
Rev. Clín. Ortod. Dent. Press ; 3(6): 17-24, dez.2004-jan.2005. ilus
Article in Portuguese | LILACS, BBO - Dentistry | ID: biblio-856151

ABSTRACT

O presente artigo, breve como pede o assunto, oferece ao clínico neófito instruções operacionais sobre a construção, colagem e remoção do contensor fixo inferior 3x3. Por isso mesmo, o texto evoca uma das facetas de facilidade da Ortodontia, a recidiva do apinhamento anterior inferior, objeto de incontáveis teses de pós-graduação. Compila, ainda a literatura pertinente para substanciar o tema


Subject(s)
Orthodontic Appliances/standards , Orthodontic Appliance Design , Recurrence
20.
Rev. Clín. Ortod. Dent. Press ; 3(5): 39-55, out.-nov. 2004. ilus
Article in Portuguese | BBO - Dentistry | ID: biblio-856146

ABSTRACT

A grande maioria das prescrições de braquetes é derivada das oclusões naturais ou da experiência clínica dos autores, onde a angulação e a inclinação dos dentes são obtidas dos valores médios encontrados nas pesquisas. Estas recomendações de torque são adequadas na grande maioria dos casos, no entanto, esses valores podem ser influenciados por algumas variáveis, tais como: a forma do arco dentário; a morfologia da face vestibular; a posição vertical do braquete na face vestibular e a posição de irrupção dentária. O objetivo deste artigo é discutir a importância do perfeito posicionamento dos caninos no final do tratamento ortodôntico e identificar os casos onde temos que realizar algumas compensações de torque, quando se utiliza o aparelho pré-ajustado


Subject(s)
Orthodontic Appliances/standards , Cuspid , Torque
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