Prevalence of dental caries and periodontal disease in children and young adults with ASD can be considered as high, pointing to the need for oral health policies focused on these individuals.

This review aims at describing and comparing materials commonly used in root canal therapy, the cytotoxicity,histopathological, microbiological and clinical aspects of a iodoform-based paste (Guedes-Pinto Paste-GPP) used in endodontic treatment of primary teeth. GPP has shown excellent biocompatibility to pulp fibroblasts and mild inflammatory reactions, having been well-tolerated by the periapical and connective tissues. Moreover, GPP bactericidal and bacteriostatic effects against many oral microorganisms were also demonstrated. Regarding clinical trials, the GPP technique has achieved success rates when considering clinical and radiographic examinations. In the face of all the above mentioned results, this paper would like to propose the use of this endodontic material as a root canal filling for primary teeth.

Differences, limits of agreement and ICCs for each method were respectively EAL = -0.29; -1.02 to 0.44; 0.990; T + RAD = 0.17; -2.18 to 2.51; 0.929; RAD = 0.50; -3.41 to 4.41; 0.818; RDIG = 0.95; -3.76 to 5.65; 0.700; and T = -0.48; -5.59 to 4.64; 0.499. The most accurate and acceptable method was the EAL, followed by the T + RAD. : The EAL method performed best for root canal length determination in primary teeth.

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