Evaluation of experimental cleanser solution of Ricinus communis: effect on soft denture liner properties. Comparative effects of two different artificial body fluids on Candida albicans adhesion to soft lining materials. Pulpal reaction to a dental adhesive in deep human cavities. Three-year clinical evaluation of the Clearfil Liner Bond system.
OBJECTIVE This study evaluated colour stability , hardness and roughness of soft denture liners after immersion in various cleansers . MATERIAL S AND METHODS Thirty specimens ( 14 mm × 4 mm ) of Elite Soft Relining ( ES ) and Mucopren Soft ( MS )  were r and omly immersed in distilled water at 37 ° C , sodium hypochlorite 1 % , and an experimental Ricinus communis solution ( RC ) for 7 , 15 and 183 continuous days . RESULTS anova ( p < 0.05 ) and Tukey 's test indicated that after T7 ( μ = 8.79 ± 7.36 ) ; T15 ( μ = 4.23 ± 2.62 ) and T183 ( μ = 8.78 ± 3.16 ) , MS presented a higher increase in hardness than ES . After T7 , MS underwent an increase in roughness ( μ = 0.09 ± 0.80 ) ; ES underwent a decrease ( μ = -0.08 ± 0.16 ) . RC caused the smallest variation in roughness . After T15 , both material s presented an increase in roughness . After T183 , ES ( μ = -0.30 ± 0.48 ) presented a higher roughness variation than MS ( μ = -0.07 ± 0.32 ) . Hypochlorite caused an increase in roughness ( μ = 0.02 ± 0.19 ) . CONCLUSION After all periods ES presented higher colour alteration than MS ; highest colour alteration was caused by hypochlorite . Both material s were more stable after immersion in RC This study investigated the  C. albicans adhesion to cold- and heat-polymerized soft lining material s that were initially incubated in two different artificial body fluids , namely saliva and nasal secretion , and examined the surface roughness the material s ( cold and heat polymerized soft liner ) tested in vitro . Cold ( Visco Gel ) and heat-polymerized ( Molloplast B ) soft liner specimens ( N=32 , n=8 per group ) ( 10x10x1.5 mm ) were r and omly produced to express the relationship between surface roughness and contamination , and influence of body fluids , and incubated in 1.5 ml contaminated solutions for 2 h. After fixation , all of material s were evaluated under optical microscope ( x400 ) and SEM . Surface roughness measurements were examined with profilometre for each material . Data were analyzed using two-way ANOVA , Tukey 's HSD and Dunnett T3 tests ( alpha=0.05 ) . Material type ( p<0.05 ) and contamination media ( p<0.05 ) showed a significant influence on the C. albicans adherence . The surface roughness  of cold polymerized soft liner ( Visco Gel ) was significantly higher than heat-polymerized soft liner ( Molloplast B ) ( p<0.05 ) In the last years several dental adhesives have been developed . They are supposed to chemically adhere to dentin and a liner to protect the pulp is not used . The aim of this study was to compare the short-term pulpal reaction , in an intra-toothpair study , between a dental adhesive , Scotchbond 2 , and a lining system , Tubulitec , in combination with P-50 in surface-sealed cavities . Deep buccal cavities in 16 human pairs of premolars , 32 teeth , were restored in vivo with a light cured composite resin , P-50 . To minimize bacterial contamination all cavities were treated with a cleanser , Tubulicid , and the cavities were surface-sealed with temporary cement , Coltosol . One tooth in each pair , the test , was treated with Scotchprep Dentin Primer and Scotchbond 2 Light Cure Dental Adhesive . In the other tooth in the pair , the control , Tubulitec Primer and Liner were used . The teeth were extracted after 6 - 14 days . The sections were evaluated for degree of inflammation and the presence of bacteria . Irrespective of treatment of dentin the majority of teeth , 23 , including one pulpal exposure , revealed no inflammation or a few inflammatory cells . In four test teeth , including one pulpal exposure , and two controls , growth of bacteria was found on the cavity walls and slight or moderate inflammation was seen in the corresponding pulps . In one test and two control teeth slight inflammation was seen but no bacteria could be detected . In the absence of bacteria Scotchbond 2 did not seem to irritate the pulp . ( ABSTRACT TRUNCATED AT 250 WORDS Modern dental adhesive systems have improved the bond of restorative material s to mineralized tooth structures . The purpose of this study was to evaluate the clinical performance of composite restorations placed in abrasion and erosion lesions using the Clearfil Liner Bond dental adhesive system . Following ADA clinical guidelines for dentin and enamel adhesive material s , 62 facial class 5 smooth surface erosion or abrasion lesions with no undercuts and involving primarily root surfaces were restored in 25 adult male and female patients . The teeth were restored without preparations using Clearfil Liner Bond and Clearfil Photo Anterior composite resin . The clinical performance of the restorations was assessed by two examiners at baseline , 6 months , 1 , 2 , and 3 years using the following evaluative parameters : color match , marginal discoloration , and marginal integrity according to modified Ryge criteria ; the presence or absence of recurrent decay ; pre- and postoperative sensitivity ; and restoration failure due to loss of retention or other causes . At the end of 3 years , four of the 55 restorations remaining in the study failed due to lack of retention ( 92.7 % retention rate ) . The evaluations of the other clinical parameters demonstrated excellent performance by this system
Conclusion Adhesion to the prosthesis base is improved with surface treatments .
Rough surfaces and changes in hardness compromise the material 's serviceability
Purpose The objective of this systematic review is to compare results concerning the properties of adhesion , roughness , and hardness of dental liners obtained in the last ten years .