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Outcome of Selective Caries Removal Performed by Undergraduate Students

10 de agosto de 2026 atualizado por: Nessrin Taha, King Abdullah University Hospital

Selective Caries Removal in Deep Carious Lesions of Permanent Teeth by Undergraduate Dental Students: A Prospective Clinical Study

Deep tooth decay can sometimes reach very close to the nerve of a tooth. Traditionally, dentists may remove all of the decayed tooth tissue, but removing too much tissue can increase the risk of exposing or damaging the nerve.

This study is looking at a more conservative way of treating deep tooth decay called selective removal of tooth decay. Instead of removing all the affected tissue close to the nerve, some of it is carefully left in place to help protect the nerve and preserve the tooth.

We will compare two ways of doing this. In one group, the dentist will remove the decay until softer tooth tissue remains near the nerve. In the other group, the dentist will remove more of the decay until firmer, leathery tooth tissue remains.

About 100 patients with deep tooth decay in permanent teeth will take part in the study. The treatment will be provided by trained fifth-year dental students under supervision and using standardized procedures.

After treatment, patients will be asked about any pain at 1, 3, and 7 days. The treated teeth will also be checked clinically and with dental X-rays at 6 and 12 months.

The purpose of the study is to find out whether either approach provides better outcomes while preserving the health of the tooth. The results may help dentists choose the most appropriate and conservative way to treat deep tooth decay and may also help improve dental student training.

Visão geral do estudo

Status

Ativo, não recrutando

Condições

Intervenção / Tratamento

Descrição detalhada

This is a prospective, randomized clinical study evaluating two approaches to selective caries removal (SCR) for the management of deep carious lesions in permanent teeth. The study will compare selective caries removal to soft dentine with selective caries removal to firm/leathery dentine. The aim is to determine whether the texture of the dentine left over the pulp influences clinical and radiographic treatment outcomes.

Following approval by the Institutional Review Board, eligible patients will be recruited from the dental teaching clinics at Jordan University of Science and Technology (JUST). Written informed consent will be obtained from all participants before enrollment. Approximately 100 patients will be included, with one tooth per patient. Participants will be randomly allocated in a 1:1 ratio to receive selective caries removal to either soft dentine or firm/leathery dentine.

Selective caries removal will be performed under rubber dam isolation according to a standardized clinical protocol. Soft dentine will be defined as soft, wet, easily deformable dentine that can be readily removed with a hand instrument. Firm/leathery dentine will be defined as drier, rubbery, less compressible dentine that provides moderate resistance to excavation. Following caries removal, the cavity will be disinfected and restored using a standardized adhesive restorative procedure.

Treatment will be performed by fifth-year undergraduate dental students under the supervision of experienced dental specialists. Supervisors will be calibrated before the study using standardized clinical cases, including clinical photographs, radiographs, and videos. Cases will be distributed among supervisors to promote consistent clinical supervision and standardization of treatment.

Baseline information, including patient and tooth characteristics, pain history, and caries risk, will be recorded. Postoperative pain will be assessed at 1, 3, and 7 days after treatment. Clinical and radiographic examinations will be performed at 6 and 12 months to evaluate the condition and treatment outcome of the treated teeth.

The study will assess whether selective caries removal to soft dentine provides outcomes comparable to or different from selective caries removal to firm/leathery dentine. The findings may help determine the most appropriate extent of caries removal for deep lesions and provide evidence to support conservative caries management in undergraduate dental education.

Tipo de estudo

Intervencional

Inscrição (Estimado)

100

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.

Locais de estudo

      • Irbid, Jordânia, 3030
        • Jordan University of Science and Technology

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

  • Filho
  • Adulto
  • Adulto mais velho

Aceita Voluntários Saudáveis

Sim

Descrição

Inclusion Criteria:

  • Patients in good general health (ASA I or II).
  • One permanent tooth with a deep carious lesion involving ≥ ¾ of the dentine on bitewing radiograph.
  • Positive response to cold and/or electric pulp testing.
  • Bite-wing radiographic evidence of a well-defined radiodense zone between the carious lesion and the pulp.

Exclusion Criteria:

  • Irreversible pulpitis
  • Need for post and core restoration
  • Non restorable teeth
  • Negative response to sensibility testing
  • Inability to isolate the tooth via rubber dam

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: Tratamento
  • Alocação: Randomizado
  • Modelo Intervencional: Atribuição Paralela
  • Mascaramento: Triplo

Armas e Intervenções

Grupo de Participantes / Braço
Intervenção / Tratamento
Experimental: Selective craies removal to soft dentine
Dental caries will be cleaned from peripheries and soft dentine will be left over the pulpal wall
Selective removal of carious dentine until soft dentine remains over the pulp, followed by standardized cavity disinfection and adhesive restoration.
Comparador Ativo: Selective caries removal to firm dentine
Dental caries will be cleaned from peripheries and firm dentine will be left over the pulpal wall
Selective removal of carious dentine until firm/leathery dentine remains over the pulp, followed by standardized cavity disinfection and adhesive restoration.

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Success
Prazo: 6, 12, 24, 36 months
Treatment success will be assessed based on the clinical and radiographic condition of the treated tooth. Clinical success will include absence of spontaneous pain, tenderness to percussion, swelling, sinus tract, or other signs of pulpal or periapical disease. Radiographic success will be defined by tooth vitality and response to sensibility testing and absence of periapical pathology on follow-up radiographs.
6, 12, 24, 36 months

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
Postopertive pain
Prazo: 1, 3, 7 days postoperative
Postoperative pain will be assessed using a numerical rating scale from 0 to 10, where 0 represents no pain and 10 represents the most severe pain. Participants will report their pain intensity following treatment, and any analgesic use during the postoperative period will also be recorded.
1, 3, 7 days postoperative
Tooth survival
Prazo: 12, 24, 36 months
Tooth survival will be assessed by determining whether the treated tooth remains present and functional during the follow-up period. Tooth survival will be defined as retention of the treated tooth without extraction. The need for additional endodontic treatment or other major intervention will also be recorded.
12, 24, 36 months

Colaboradores e Investigadores

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

Patrocinador

Colaboradores

Investigadores

  • Cadeira de estudo: Nessrin Taha, DClinDent, PhD, Jordan University of Science and Technology

Publicações e links úteis

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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 (Real)

1 de novembro de 2025

Conclusão Primária (Estimado)

1 de dezembro de 2027

Conclusão do estudo (Estimado)

1 de novembro de 2029

Datas de inscrição no estudo

Enviado pela primeira vez

10 de agosto de 2026

Enviado pela primeira vez que atendeu aos critérios de CQ

10 de agosto de 2026

Primeira postagem (Real)

14 de agosto de 2026

Atualizações de registro de estudo

Última Atualização Postada (Real)

14 de agosto de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

10 de agosto de 2026

Última verificação

1 de agosto de 2026

Mais Informações

Termos relacionados a este estudo

Outros números de identificação do estudo

  • 494/2025

Plano para dados de participantes individuais (IPD)

Planeja compartilhar dados de participantes individuais (IPD)?

INDECISO

Descrição do plano IPD

Individual participant data will not be shared publicly due to institutional regulations regarding data access and participant confidentiality. Requests for access to study data may be considered by the Principal Investigator following publication of the study results, in accordance with university policies and applicable ethical requirements.

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

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