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Clinical Performance of CAD/CAM Occlusal Splints Fabricated With or Without a Wax Bite Registration in Healthy Adults (Splint)

24 de julho de 2026 atualizado por: Radboud University Medical Center

Clinical Performance of CAD/CAM Occlusal Splints Fabricated With or Without Wax Bite Registration: A Randomized Crossover Clinical Trial

Occlusal splints are commonly used to manage sleep bruxism, temporomandibular disorders, and tooth wear. Traditionally, a wax bite registration is used during the fabrication of CAD/CAM occlusal splints to determine the vertical dimension and occlusal relationship. New digital techniques allow the splint to be designed without a wax bite registration by virtually increasing the vertical dimension based on maximal intercuspation.

This randomized crossover study compares these two fabrication workflows in healthy volunteers. Participants will wear both splints in random order. The study will evaluate patient-reported comfort and clinical performance, including occlusal contacts, force distribution, splint stability, and the occlusal adjustments required during insertion

Visão geral do estudo

Status

Ainda não está recrutando

Condições

Intervenção / Tratamento

Descrição detalhada

Occlusal splints are widely used in the management of sleep bruxism, temporomandibular disorders, and tooth wear. The increasing implementation of CAD/CAM technology has improved the efficiency and reproducibility of occlusal splint fabrication. Conventionally, the vertical dimension and occlusal relationship are determined using a wax bite registration. Recent developments in digital dentistry now allow the vertical dimension to be increased virtually based on the patient's maximal intercuspation, eliminating the need for an additional wax bite registration.

Although both fabrication workflows are currently used in clinical practice, there is limited clinical evidence comparing their performance. It remains unclear whether omitting the conventional wax bite registration affects the initial clinical performance of CAD/CAM occlusal splints at insertion, before any occlusal adjustments are performed. Potential differences may exist in patient comfort, splint stability, occlusal contacts, force distribution, and the number of occlusal adjustments required. In addition, little is known about differences in patient-reported outcomes, including comfort, perceived occlusion, stability, and overall satisfaction during the period of splint use.

Tipo de estudo

Intervencional

Inscrição (Estimado)

30

Estágio

  • Não aplicável

Contactos e Locais

Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.

Contato de estudo

Estude backup de contato

Locais de estudo

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

  • Adulto

Aceita Voluntários Saudáveis

Sim

População do estudo

The population for this prospective clinical randomized crossover trial, will consist of young adult participants aged 18 to 45, which study Dentistry, or are a co-worker or patient at the Dentistry Department of Radboudumc Nijmegen.

Descrição

Inclusion criteria:

  • Subjects aged 18-45 years
  • Subjects with an ASA physical status classification of I-III.
  • Subjects with healthy complete dentitions (except for congenitally missing teeth (agenesis), extractions of wisdom teeth, or tooth extractions for the purpose of orthodontic treatment in the past)
  • Subjects willing and able to participate in the study
  • Subjects willing to provide written informed consent for their participation in the study

Exclusion Criteria:

  • Subjects presenting with active dental disease, extensive restorations affecting the occlusion, or other oral conditions that may interfere with the assessment of the occlusal splints
  • Subjects with a history of autoimmune disorders
  • Subjects with known allergies to acrylic materials
  • Subjects with severe allergies manifested by a history of anaphylaxis or those with severe, chronic allergies (e.g., asthma) and subjects with an active infection of any kind at the time of enrollment
  • Subjects who are pregnant or lactating
  • Subjects enrolled in another investigational clinical trial

Plano de estudo

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

Como o estudo é projetado?

Detalhes do projeto

  • Finalidade Principal: Outro
  • Alocação: Randomizado
  • Modelo Intervencional: Atribuição cruzada
  • Mascaramento: Solteiro

Armas e Intervenções

Grupo de Participantes / Braço
Intervenção / Tratamento
Experimental: Sequence B
Participants receive a CAD/CAM occlusal splint fabricated using a virtual increase of the vertical dimension (without a wax bite registration) for 3 weeks, followed by a CAD/CAM occlusal splint fabricated using a conventional wax bite registration for 3 weeks.
Intervention 1: CAD/CAM occlusal splint fabricated using a virtual increase of the vertical dimension CAD/CAM-milled occlusal splint fabricated from PMMA using a fully digital workflow. The splint is designed by virtually increasing the vertical dimension based on the participant's maximal intercuspation, without the use of a conventional wax bite registration. Participants will wear the splint overnight for 3 weeks (minimum 6 hours per night).
Intervention 2: CAD/CAM occlusal splint fabricated using a conventional wax bite registration CAD/CAM-milled occlusal splint fabricated from the same PMMA material using a conventional wax bite registration to determine the vertical dimension and occlusal relationship during the digital design process. Participants will wear the splint overnight for 3 weeks (minimum 6 hours per night).
Experimental: Sequence A
Participants receive a CAD/CAM occlusal splint fabricated using a conventional wax bite registration for 3 weeks, followed by a CAD/CAM occlusal splint fabricated using a virtual increase of the vertical dimension (without a wax bite registration) for 3 weeks.
Intervention 1: CAD/CAM occlusal splint fabricated using a virtual increase of the vertical dimension CAD/CAM-milled occlusal splint fabricated from PMMA using a fully digital workflow. The splint is designed by virtually increasing the vertical dimension based on the participant's maximal intercuspation, without the use of a conventional wax bite registration. Participants will wear the splint overnight for 3 weeks (minimum 6 hours per night).
Intervention 2: CAD/CAM occlusal splint fabricated using a conventional wax bite registration CAD/CAM-milled occlusal splint fabricated from the same PMMA material using a conventional wax bite registration to determine the vertical dimension and occlusal relationship during the digital design process. Participants will wear the splint overnight for 3 weeks (minimum 6 hours per night).

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Participant-reported comfort
Prazo: From enrollment to the end of treatment at 7 weeks
Self-reported wear comfort by filling in a questionnaire. This scale measures the comfort of the occlusal splint (0-10), where "very uncomfortable" represents the worst experience (lowest score) and "very comfortable" represents the best experience (highest score). Minimum Value: very uncomfortable, Maximum Value: very comfortable. Higher Scores Mean: better comfort (more comfort)
From enrollment to the end of treatment at 7 weeks

Colaboradores e Investigadores

É aqui que você encontrará pessoas e organizações envolvidas com este estudo.

Patrocinador

Investigadores

  • Investigador principal: Sabine Mechelse, MSc, Radboud University Medical Center

Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados ​​pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Início do estudo (Estimado)

1 de setembro de 2026

Conclusão Primária (Estimado)

31 de janeiro de 2027

Conclusão do estudo (Estimado)

31 de janeiro de 2027

Datas de inscrição no estudo

Enviado pela primeira vez

17 de julho de 2026

Enviado pela primeira vez que atendeu aos critérios de CQ

17 de julho de 2026

Primeira postagem (Real)

22 de julho de 2026

Atualizações de registro de estudo

Última Atualização Postada (Real)

27 de julho de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

24 de julho de 2026

Última verificação

1 de julho de 2026

Mais Informações

Termos relacionados a este estudo

Outros números de identificação do estudo

  • R0147841A

Plano para dados de participantes individuais (IPD)

Planeja compartilhar dados de participantes individuais (IPD)?

SIM

Descrição do plano IPD

Specific IPD datasets, such as those underlying published results, will be shared. However, this sharing will occur under strict conditions to ensure data security and participant confidentiality. The data will be pseudonymized, using a secure key management system to separate identifiers from research data. Access will require appropriate agreements, ensuring compliance with ethical and legal standards, and will be granted only for research purposes aligning with the study's objectives.

Prazo de Compartilhamento de IPD

Beginning 3 months and ending 3 years after the publication of results.

Critérios de acesso de compartilhamento IPD

To ensure confidentiality and compliance, access to IPD will be restricted to authorized personnel involved in the research process, including the Principal Investigator (PI), specific research team members, external collaborators, and regulatory authorities. Access is based on each individual's role and necessity for the research. The PI will have full access to the IPD, pseudonymized data, and supporting documents for data management and reporting. Research team members, such as co- investigators, assistants, and statisticians, will have access to the data necessary for their assigned tasks. Access will be controlled through formal data requests, Data Use Agreements, and secure platforms. Pseudonymization ensures participant confidentiality while enabling the sharing of valuable research data for scientific progress.

Tipo de informação de suporte de compartilhamento de IPD

  • PROTOCOLO DE ESTUDO
  • SEIVA
  • CIF

Informações sobre medicamentos e dispositivos, documentos de estudo

Estuda um medicamento regulamentado pela FDA dos EUA

Não

Estuda um produto de dispositivo regulamentado pela FDA dos EUA

Não

Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .