11 - ORIGINAL ARTICLE
MATERIALS TESTING
Portland cement with additives in the repair of furcation perforations in dogs1
Cimento Portland com aditivos na reparação de perfurações radiculares em cães
José Dias da Silva NetoI, Taylor Brandão SchnaiderII, Alfredo GragnaniIII, Anderson Paulo de PaivaIV, Neil Ferreira NovoV, Lydia Masako FerreiraVI
IFellow PhD degree, Postgraduate Program in Plastic Surgery, UNIFESP, Sao Paulo, Brazil. Surgical procedures, acquisition of data, manuscript writing.
IIPhD, Full Professor, Department of Clinical Medicine, UNIVAS, Pouso Alegre-MG, Brazil. Acquisition of data, manuscript writing, critical revision.
IIIPhD, Affiliate Professor, Department of Surgery, UNIFESP, Sao Paulo, Brazil. Manuscript writing, critical revision.
IVPhD, Institute of Production Engineering and Management, Itajuba Federal University (UNIFEI), Minas Gerais, Brazil. Statistical analysis.
VPhD, Department of Biostatistics, UNIVAS, Pouso Alegre-MG, Brazil. Statistical analysis.
VIPhD, MBA, Full Professor, Head, Division of Plastic Surgery, UNIFESP, Sao Paulo, Brazil. Coordinator Med III CAPES. Main author. Conception, design, intellectual and scientific content of the study, manuscript writing, critical revision.
ABSTRACT
PURPOSE: To evaluate the use of Portland cements with additives as furcation perforation repair materials and assess their biocompatibility.
METHODS: The four maxillary and mandibular premolars of ten male mongrel dogs (1-1.5 years old, weighing 10-15 kg) received endodontic treatment (n=80 teeth). The furcations were perforated with a round diamond bur (1016 HL). The perforations involved the dentin, cementum, periodontal ligament, and alveolar bone. A calcium sulfate barrier was placed into the perforated bone to prevent extrusion of obturation material into the periradicular space. The obturation materials MTA (control), white, Type II, and Type V Portland cements were randomly allocated to the teeth. Treated teeth were restored with composite resin. After 120 days, the animals were sacrificed and samples containing the teeth were collected and prepared for histological analysis.
RESULTS: There were no significant differences in the amount of newly formed bone between teeth treated with the different obturation materials (p=0.879).
CONCLUSION: Biomineralization occurred for all obturation materials tested, suggesting that these materials have similar biocompatibility.
Key words: Biocompatible Materials. Calcium Sulfate. Dental Cements. Furcation Defects. Dogs.
RESUMO
OBJETIVO: Avaliar o uso de cimentos Portland aditivados na reparação de perfurações radiculares e a biocompatibilidade destes materiais.
MÉTODOS: Oitenta pré-molares, quatro da arcada dentária superior e quatro da arcada inferior de 10 cães machos, sem raça definida, com idade em torno de um a um ano e meio, pesando entre 10 e 15 kg foram submetidos a tratamento endodôntico, sendo realizadas perfurações nas furcas com broca de diamante 1016 HL. A cavidade envolveu dentina e cemento, como também periodonto e o osso alveolar. Na porção óssea da obturação, barreira de sulfato de cálcio foi utilizada evitando extravasamento do cimento para o espaço
periodontal. Foi realizada a distribuição randomizada dos cimentos MTA (controle), Portland tipo II, Portland tipo V e Portland branco estrutural nas obturações. Os dentes foram restaurados com resina composta. Após 120 dias realizou-se eutanásia, retirada dos dentes,
preparação e análise histológica.
RESULTADOS: Entre os cimentos não houve diferença estatística significante quanto à neoformação óssea (p=0,879).
CONCLUSÃO: Ocorreu biomineralização com os diferentes cimentos usados no estudo, sugerindo que estes são similares em termos de biocompatibilidade.
Descritores: Materiais Biocompatíveis. Sulfato de Cálcio. Cimentos Dentários. Defeitos da Furca. Cães.
Artigo completo => https://drive.google.com/file/d/1OyZvVXB9QoDcDrrmBUvcdgDZmvwvaIs4/view?usp=sharing
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