Volumetric Analysis of Resorption Types on CBCT

Recep Tayyip Erdogan University Training and Research Hospital

Status: Completed

Conditions: Endodontic Disease; Tooth Resorption

Study type: Observational

Funder types: Other

Identifiers

NCT04617301

2020/98

Details and patient eligibility

About

More accurate management of resorption can be achieved thanks to the three-dimensions volumetric and linear analysis, and the axial classification presented in this study.

Full description

The aim of this study was to investigate the volumetric and linear analysis, and to present the axial classification of root resorptions using cone beam computed tomography (CBCT).

A total of 43 teeth of external cervical resorption (ECR) (n=27), external replacement resorption (ERR) (n=4) and internal root resorption (IRR) (n=12) were identified from 34 patients. The volume of resorption and total tooth, the widest lengths of these resorptions, and the amount of thinnest dentin thickness around them were measured and compared according to age and sex. Additionally, the eight regional axial classification was performed and the percentages in these regions were evaluated. Significance was set at p=0.05 for statistical analysis.

More accurate management of resorption can be achieved thanks to the three-dimensions volumetric and linear analysis, and the axial classification presented in this study.

Enrollment: 43 patients

Sex: All

Ages: 12 to 71 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Cases of resorption that had CBCT images

Exclusion criteria

• those presenting pathologic lesions, congenital/developmental anomalies or teeth with root canal filling
• those whose CBCT scans failed to present satisfactory quality.
• Additionally, SR, TAP, and EIR cases were excluded because their true dimensions could not be completely determined before resorption.

Trial design

43 participants in 3 patient groups

Group 1. Internal root resorption (IRR)

Description:

Internal root resorption is the progressive destruction of intraradicular dentin and dentinal tubules along the middle and apical thirds of the canal walls as a result of clastic activities. It is seen as a radiolucent area around the pulpal cavity, usually of incisors and mandibular molars. The various etiological factors suggested for internal root resorption include traumatic injury; infection and orthodontic treatment.

Group 2. external cervical resorption (ECR)

Description:

Cementum is considered to protect the underlying root dentin from being resorbed. It is broadly accepted that damage to or deficiency of this protective cementum layer below the epithelial attachment exposes the root surface to osteoclasts, which then resorb the dentin. Clinical sign; Located in cervical region of tooth Pink spot might be noted by patient/dentist Tooth usually responds positively to vitality tests unless there is pulpal involvement (in very advanced cases) Spontaneous and profuse bleeding on probing Sharp, thinned out edges around the resorptive cavity

Grup 3. external replacement resorption (ERR)

Description:

external replacement resorption also known as trauma-induced resorption - and this resorption may occur in teeth that also have external inflammatory resorption. This review will not discuss external replacement resorption in detail but it will be mentioned where relevant as both types of resorption may occur in some cases. This is because replacement resorption is a consequence of the same injuries that typically cause external inflammatory resorption - such as intrusion and avulsion where there is significant damage to the external root surface during the injury, as well as sometimes during the repositioning/ replantation of the tooth.