In Situ Evaluation of the Microbial Adhesion on a Hard Acrylic Resin and a Soft Liner Used in Removable Prostheses

• Tipo: Artigo em Revista Científica Internacional
• Data: 2015

Autores

Gomes, AS (Autor) Outra; Benedita Sampaio-Maia (Autor) FMUP; Vasconcelos M (Autor) FMDUP; Patrícia Fonseca (Autor) Outra; Maria Helena Figueiral (Autor) FMDUP

Revista

Título: International Journal of Prosthodontics

Vol. 28

Páginas: 65-71

ISSN: 0893-2174

Editora: Quintessence Publishing Company

Indexação

ISI Web of Knowledge - 8 Citações

Scopus - 6 Citações

Pubmed / Medline

Classificação Científica

CORDIS: Ciências da Saúde

FOS: Ciências médicas e da saúde

Outras Informações

ID Authenticus: P-00A-6B3

DOI: 10.11607/ijp.4080

Abstract (EN): Purpose: The purpose of this study was to evaluate, in situ, the initial adhesion of microorganisms to as well as the surface roughness and chemical composition of Pro Base Hot (Ivoclar Vivadent), a hard acrylic resin, and Vertex Soft (Vertex-Dental), an acrylic-based soft liner, used in removable dental prostheses. Materials and Methods: Equal sized disks of Pro Base Hot and Vertex Soft were prepared and polished according to the recommended procedures for clinical use. Two disks of each material were mounted in individual oral splints and exposed for 4 hours to the oral cavities of 15 participants. The microbial adhesion to each material's surface was measured with the pour plate technique using rich and selective growth media. Statistical analysis was performed using the Student t test. Scanning electron microscopy and chemical composition analyses obtained through electron probe radiographic microanalysis of sample disks also were performed. Results: In comparison to Pro Base Hot, Vertex Soft presented higher microbial adhesion, namely regarding total aerobes, anaerobes, streptococci, and mutans streptococci (P < .05). Also, Vertex Soft presented higher surface roughness. Differences in the chemical composition of the two materials also were found. Conclusions: The Vertex Soft liner has been found to be more susceptible to microbial adhesion than the acrylic resin Pro Base Hot, probably due to its greater surface roughness. The application of Vertex Soft liner to a hard denture base may lead to a higher risk of oral and systemic infections for patients, highlighting a greater need for plaque control, especially for more susceptible individuals.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7