Abstract
Several factors influence the cleaning and shaping capacity of instrumentation techniques, such as internal resorption areas. Internal root resorption contributes to failure of endodontic treatment, since debris may remain attached to dentine walls, and the instruments are not able to completely remove them. This paper reports a clinical case of endodontic treatment of a tooth with internal root resorption using a hybrid instrumentation technique. After clinical and radiographic examinations, pulp necrosis with periapical lesion, and the presence of an internal root resorption were diagnosed. Biomechanical preparation began with glide path creation with sizes 15 and 20 K-type files. Apical third instrumentation was performed with rotary ProFile files #25.04 up to #35.04, followed by root canal filling. The case was followed-up for twelve months. Progressive bone repair was observed radiographically. Despite the presence of internal root resorption, the results achieved with the hybrid technique suggest effectiveness in this clinical case solution.Keywords: Dental Pulp Cavity; Endodontics; Root canal therapy.
Highlights
Root resorption can be classified as internal or external [1]
It is known that dental trauma is one of the main factors that induces internal root resorption, the aim of this article was to report a clinical case of endodontic treatment of a tooth with partial pulp necrosis with periapical lesion and internal root resorption using a hybrid technique combining manual and rotary instrumentation
The modifications in the internal root canal space contribute to the success or failure of endodontic therapy, since debris may remain attached to the dentine walls, when the instruments used are not able to completely remove them [6]
Summary
Root resorption can be classified as internal or external [1] It is considered physiological when exfoliation of deciduous teeth occurs; and pathological when it results from traumatic injuries, or irritation of the periodontal ligament and pulp tissue of permanent teeth [1]. Pathological internal root resorption is characterized by resorption of the inner surface of dentin adjacent to the granulation tissue produced after an inflammatory process as a result of trauma or stimulus strong enough to cause damage to the pulp tissue [2]. In the replacement resorption process, internal resorption is characterized by irregular increase in the pulp cavity and the etiological factor is trauma, typically of low intensity [1,2]. Treatment should be the complete removal of pulp tissue in both situations [2]
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