Background: A rough denture base surface promotes adhesion of microorganisms and plaque formation. A smooth acrylic surface is achieved by polishing. The polishability of individual acrylic resin ...materials is an important factor influencing the surface roughness of the denture base. The objective of this study was to compare the surface roughness and porosity of three different acrylic resins before and after polishing. Material and methods: Using contactprofilometric measurements and scanning electron microscopy, the surface texture of 81 specimens of autopolymerizing, heat-polymerizing and injected acrylic resin were studied after polymerization on glass, cutting with a tungsten carbide bur, and polishing with three different polishing techniques. Mean surface roughness (Ra) values for each specimen group were analyzed using two-way ANOVA and the Scheffe post-hoc test. Results: The highest mean surface roughness value was measured for surfaces finished with atungsten carbide bur. The lowest surface roughness values were determined forspecimens polished with a lathe and polishing paste. Surface roughness was influenced mainly by the finishing and polishing procedure and to a lesser extent by the acrylic resin material. The presence of large pores and rough surfaces was characteristic of autopolymerizing resin specimens. Conclusions: The surface of autopolymerizing resin is very likely to remain porous and consequently rougher than the surface of heat-polymerizing resin even after adequate polishing.
Bibliografsko gradivo je bilo uspešno dodano na polico.
Dodajanje bibliografskega gradiva na polico ni uspelo.
Gradivo je že na polici.
Trajna povezava
URL:
Faktor vpliva
Dostop do baze podatkov JCR je dovoljen samo uporabnikom iz Slovenije. Vaš trenutni IP-naslov ni na seznamu dovoljenih za dostop, zato je potrebna avtentikacija z ustreznim računom AAI.
Leto
Faktor vpliva
Izdaja
Kategorija
Razvrstitev
JCR
SNIP
JCR
SNIP
JCR
SNIP
JCR
SNIP
Izberite knjižnično izkaznico:
Baze podatkov,
v katerih je revija indeksirana
Ime baze podatkov
Področje
Leto
Povezave do osebnih bibliografij avtorjev
Povezave do podatkov o raziskovalcih v sistemu SICRIS
Storitev za pridobivanje naslova trenutno ni dostopna, prosimo, poskusite še enkrat.
S klikom na gumb "V redu" boste potrdili zgoraj izbrano prevzemno mesto in dokončali postopek rezervacije.
S klikom na gumb "V redu" boste potrdili zgoraj izbrano prevzemno mesto in naslov za dostavo ter dokončali postopek rezervacije.
S klikom na gumb "V redu" boste potrdili zgoraj izbrani naslov za dostavo in dokončali postopek rezervacije.
Obvestilo
Trenutno je storitev za avtomatsko prijavo in rezervacijo nedostopna. Gradivo lahko rezervirate sami na portalu Biblos ali ponovno poskusite tukaj kasneje.
Citiranje
Funkcionalnost trenutno ni na voljo. Prosimo, poskusite kasneje.
Naročanje gradiva za izposojo v čitalnice
Naročanje kopij člankov
Urnik dostave gradiva z oznako DS v signaturi