Effect of periodontal therapies on indirect restoration: a scanning electron microscopic analysis

Abstract

The aim of this study was to evaluate the influence of different periodontal therapies on the integrity of indirect restorations by scanning electron microscopy (SEM). Sixty single-rooted bovine teeth were selected and randomly assigned to 12 groups. Inlay cavities were prepared in the cervical region on the center of the cementoenamel junction, and were restored with laboratory processed resin and luted with a resin cement. Twelve periodontal therapies were used (n= 5): C: control (no treatment); MS: manual scaling with Gracey curettes; US: ultrasonic scaling; PP: prophylaxis with prophylactic paste; PS: prophylaxis with pumice-stone; SBJ: sodium bicarbonate jet; MS/PP; MS/PS; MS/SBJ; US/PP; US/PS; US/SBJ. The specimens were prepared and analyzed by SEM. SEM micrographs at x100 to x1000 magnification were obtained from the surface of the laboratory resin and the interface of the indirect restorations. The images were evaluated by 3 skillful, calibrated, blinded observers as to the presence of grooves, microcavities and fracture of margins. The results showed that PS produced groves on restoration surface. MS and US produced groves and marginal fractures on the restorations. SBJ resulted in resin cement degradation. These results suggest that except for PS, all procedures had deleterious effects on the marginal integrity of indirect restorations.

Effect of two prophylaxis methods on marginal gap of Cl Vresin-modified glass-ionomer restorations

“…Nonetheless, in the present study, both APD and pumice-and-rubber-cup techniques resulted in more gap formation compared to the control group. One of the reasons for the difference between the results of the latter study, 5 and those of ours might be the nature of the evaluated materials and their surface characteristics. The resistance of tooth-colored restorative materials to abrasion might be influenced by the type of the resin, the size and percentage of the fillers, and the polymerization technique used.…”

“… 17 Salami et al 18 reported that use of APD resulted in abrasion of root surfaces and destruction of restorations and resin cements. Soares et al 5 using electron microscope evaluations reported that APD destroyed the cement line in indirect composite resin restorations and produced a rough and porous surface. In addition, it formed gaps at the restoration‒tooth interface.…”

“…Various studies have evaluated the effect of different prophylactic techniques on the surface roughness of a variety of tooth-colored dental restorative materials, reporting that the effect of these techniques depends on the type of the restorative material. 1 - 4 Soares et al 5 evaluated the samples under an electron microscope and reported that prophylaxis with air-powder polishing device (APD) results in surface porosity and roughness and gap formation at indirect composite resin restoration-tooth interface, while prophylaxis with pumice results in grooves on the surface of the tooth and indirect composite resin restorations. In addition, a study on the effects of different prophylactic techniques on the microleakage of CI V cavities restored with microfilled composite resin showed that prophylactic measures (APD, pumice powder with rubber cup, and pumice powder with brush) had no detrimental effect on the microleakage of cavities.…”

In Vitro Effect of photodynamic therapy on Aggregatibacter actinomycetemcomitans and Streptococcus sanguinis

“…Traditional scaling and root planning are essential procedures in periodontal therapy (10) and rely on mechanical removal of plaque, calculus, root-bound toxins and contaminated cementum (11). A viable dental plaque covers calculus deposits, which contributes substantially to the pathogenesis of bacteria-induced periodontal disease (12). The main goal of periodontal therapy is to reduce inflammation and allow new epithelial attachment.…”

Diagnosa Radiografi dan Penanganan Penyakit Periodontal pada Anjing Yorkshire Terrier

“…Penentuan penilaiaan status periodontal dapat ditentukan dengan hasil radiografi (Kortegaard et al 2014). Tindakan yang dilakukan untuk mengurangi mikroba dalam menangani penyakit periodontal antara lain scaling, root planning (Fernandes et al 2010), dan mengontrol infeksi yang terjadi di area gingiva (Soares et al 2010). …”