The study of bone healing after endodontic microsurgery using cone beam computed tomography: a retrospective cohort study

• Amparo Ramis-Alario ^[1] ; Beatriz Tarazona-Álvarez ^[2] ; Miguel Peñarrocha-Diago ^[3] ; David Soto-Peñaloza ^[1] ; María Peñarrocha-Diago ^[4] ; David Peñarrocha-Oltra ^[4]
  1. [1] DDS, MS. Master in Oral Surgery and Implantology, Valencia University Medical and Dental School, Valencia, Spain
  2. [2] DDS, PhD. Postdoctoral Associate Professor, Department of Stomatology, Valencia University Medical and Dental School, Valencia, Spain
  3. [3] MD, PhD. Chairman of Oral Surgery and Director of the Master in Oral Surgery and Implantology, Valencia University Medical and Dental School, Valencia, Spain
  4. [4] MD, DDS, MS, PhD. Full Professor of Oral Surgery, Department of Stomatology, Valencia University Medical and Dental School, Valencia, Spain

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• Localización: Journal of Clinical and Experimental Dentistry, ISSN-e 1989-5488, Vol. 14, Nº. 8 (August), 2022, págs. 652-660
• Idioma: inglés
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• Resumen

  • The main aims of this study were to evaluate mean volume reduction, radiographic healing rate and healing outcome two years after endodontic microsurgery. The effects of certain preoperative clinical factors upon preoperative volume, volumetric changes and healing outcome were also studied.

    A clinical database was searched for patients who had undergone endodontic microsurgery and with the availability of a cone beam computed tomography (CBCT) scan preoperatively and after a control period. Volumetric analysis of the periapical area was made to assess volumetric reduction. The modified Penn 3D criteria were applied. The relationship between preoperative volume, volumetric reduction and healing outcome and certain preoperative factors was also studied.

    Fifty-seven cases were evaluated. Initially, the bone cavities had a median volume of 163.2 mm3, and this volume decreased by 147.7 mm3 after treatment, with a radiographic healing rate of 6.2 mm3 per month. After applying the modified Penn 3D Criteria, 53 cases were classified as successful healing (93%). Regarding the influence of the different preoperative factors, patient age and sex, dental arch and cortical bone significantly influenced preoperative volume, while only the dental arch exerted a significant influence upon volumetric changes and preoperative symptoms on healing outcome.

    The CBCT data evidenced a significant volume reduction of 79.1%, with a monthly volume reduction rate of 6.2 mm3. The success rate obtained was 93%. Patient age and sex, dental arch and cortical bone influenced preoperative volume, tooth type had an impact upon the volumetric changes, and the preoperative symptoms influenced healing outcome.