Australian endodontic journal : the journal of the Australian Society of Endodontology Inc · 2023
Presence of methanogenic archaea in necrotic root canals of patients with or without type 2 diabetes mellitus.
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Soza-Bolaños Ana I, Domínguez-Pérez Rubén A, Ayala-Herrera José L, Pérez-Serrano Rosa M, Soto-Barreras Uriel, Espinosa-Cristóbal León F, Rivera-Albarrán Claudia A, Zaldívar-Lelo de Larrea Guadalupe
Аннотация
Theoretically, a necrotic root canal fulfils all requirements as a niche for methanogens to inhabit. However, their presence in it and its implication in apical periodontitis (AP) is controversial. Therefore, to contribute to ending the controversy, this study aimed to detect and compare methanogens' presence in two distinct niches with supposedly different microenvironments; both were necrotic root canals associated with AP but one from patients with type 2 diabetes mellitus (T2DM) while the other from non-diabetic patients. A clinical examination was performed on 65 T2DM patients and 73 non-diabetic controls. Samples from necrotic root canals were obtained, and methanogens were identified. The presence of methanogens was three times higher (27.6%) in the T2DM group than in non-diabetic patients (8.2%). In addition, methanogens' presence was associated with a higher prevalence of periapical symptoms.