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The correlation between external apical root resorption and electric pulp test responses: a prospective clinical trial
Younessian, Farnaz; Behnaz, Mohammad; Badiee, Mohammadreza; Dalaie, Kazem; Sarikhani, Arezou; Shekarian, Shiva; Kavousinejad, Shahab; Ebadifar, Asghar.
  • Younessian, Farnaz; Nova Southeastern University. College of Dental Medicine. Department of Orthodontics. Fort Lauderdale. US
  • Behnaz, Mohammad; Shahid Beheshti University of Medical Sciences. Orthodontic Department. Dental Research Center. Tehran. IR
  • Badiee, Mohammadreza; Shahid Beheshti University of Medical Sciences. Orthodontic Department. Dentofacial Deformities Research Center. Tehran. IR
  • Dalaie, Kazem; Shahid Beheshti University of Medical Sciences. Orthodontic Department. Tehran. IR
  • Sarikhani, Arezou; s.af
  • Shekarian, Shiva; s.af
  • Kavousinejad, Shahab; Shahid Beheshti University of Medical Sciences. Orthodontic Department. Tehran. IR
  • Ebadifar, Asghar; Shahid Beheshti University of Medical Sciences. Orthodontic Department. Dental Research Center. Tehran. IR
Dental press j. orthod. (Impr.) ; 26(3): e2119389, 2021. tab, graf
Article in English | LILACS, BBO | ID: biblio-1286216
ABSTRACT
ABSTRACT

Objective:

The current study investigated the correlation between pulpal sensitivity to the electric pulp tester (EPT) and external apical root resorption (EARR) in four types of maxillary anterior teeth of fixed orthodontic treatment patients.

Methods:

In this prospective cohort study, 232 anterior teeth of 58 patients (mean age 18.96 ± 6.13 years) treated with fixed orthodontic treatment were examined. The EPT readings were recorded at twelve time points immediately before archwire insertion. Root resorption of four maxillary incisors were measured by means of parallel periapical radiographs at three time intervals (six months interval from the start) through design-to-purpose software to optimize data collection. A multiple linear regression model and Pearson correlation coefficient were used to assess the association of EPT values and observed EARR (p< 0.05).

Results:

The highest level of EPT measurement was recorded at initial visit, and then there was a decreasing trend in EPT level during treatment for the next six and twelve months. There was another increasing trend after six months till the finishing time of the treatment. There was a significant correlation between changes in root length and time of recording the root length (p< 0.001). There was significant positive correlation between changes in EPT level and amount of observed root resorption (p< 0.001).

Conclusion:

The relative decrease in electric pulp test level could be a diagnostic sign of root resorption during orthodontic treatment. Further studies with longer follow up are needed to confirm the current results.
RESUMO
RESUMO

Objetivo:

O presente estudo investigou a correlação entre a sensibilidade pulpar ao teste pulpar elétrico (TPE) e a reabsorção radicular apical externa (RRAE) nos quatro dentes anteriores superiores de pacientes em tratamento ortodôntico com aparelho fixo.

Métodos:

Nesse estudo de coorte prospectivo, foram avaliados 232 dentes anteriores de 58 pacientes (idade média 18,96 ± 6,13 anos) tratados com aparelho ortodôntico fixo. As leituras do TPE foram registradas em doze tempos de avaliação, imediatamente antes da inserção dos arcos. As reabsorções radiculares dos quatro incisivos superiores foram aferidas por meio da média das radiografias periapicais, em três intervalos de tempo (em intervalos de seis meses desde o início) por um software desenvolvido para essa finalidade, com o intuito de otimizar a coleta de dados. Para aferir a associação entre os valores de TPE e as RRAE observadas (p< 0,05), foram utilizados o modelo de regressão linear múltiplo e o coeficiente de correlação de Pearson.

Resultados:

O nível mais alto das medidas do TPE foi registrado na primeira visita e, daí em diante, houve uma tendência de diminuição no nível do TPE durante o tratamento, nos seis a doze meses seguintes. Houve, também, outra tendência de aumento após os seis meses até o término do tratamento, além de uma correlação significativa entre as mudanças no comprimento radicular e o tempo de registro do comprimento radicular (p< 0,001), bem como uma correlação positiva significativa entre as mudanças no nível do TPE e a quantidade de reabsorção radicular observada (p< 0,001).

Conclusão:

Uma diminuição relativa no nível de sensibilidade ao teste pulpar elétrico pode ser um sinal diagnóstico de reabsorção radicular durante o tratamento ortodôntico. Estudos futuros com acompanhamentos mais longos são necessários para confirmar os presentes resultados.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Root Resorption Type of study: Observational study / Risk factors Limits: Adolescent / Adult / Humans Language: English Journal: Dental press j. orthod. (Impr.) Journal subject: Orthodontics Year: 2021 Type: Article Affiliation country: Iran / United States Institution/Affiliation country: Nova Southeastern University/US / Shahid Beheshti University of Medical Sciences/IR

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Full text: Available Index: LILACS (Americas) Main subject: Root Resorption Type of study: Observational study / Risk factors Limits: Adolescent / Adult / Humans Language: English Journal: Dental press j. orthod. (Impr.) Journal subject: Orthodontics Year: 2021 Type: Article Affiliation country: Iran / United States Institution/Affiliation country: Nova Southeastern University/US / Shahid Beheshti University of Medical Sciences/IR