Conclusions MTA cements have a higher success rate , with a lower inflammatory response and a more predictable hard dentin barrier formation  than calcium hydroxide cements .
However , there were no differences , in these parameters , when MTA cement was compared with tricalcium silicate cements .
Dental adhesives systems showed the lowest success rates
Introduction Direct pulp capping therapies use bio material s to protect exposed tissues , inducing repair through the production of a mineralized barrier .
The purpose of this study was to compare the effectiveness of bio material s and techniques by means of a systematic review and meta‐ analysis .
Adverse effects of human pulps after direct pulp capping with the different components from a total-etch, three-step adhesive system.
OBJECTIVES The objective was to evaluate the response of human pulps capped with different components from a total-etch three-step adhesive system . METHODS Direct pulp capping was performed in 25 caries-free human premolars scheduled for extraction due to orthodontic treatment . The teeth were r and omly divided in five groups , and capped with the following material s : Group 1-acid+primer+adhesive were used as recommended ; Group 2-only primer was applied ; Group 3-only bonding resin ( light-cured for 10s ) ; Group 4-only composite resin ( light-cured for 40s ) ; Group 5-calcium hydroxide . After capping , all teeth were restored with ScotchBond Multi Purpose Plus and Z-100 was placed incrementally . After 60 days , the teeth were extracted and processed for light microscopic examination ( H/E ) according to a histological score system . These were subjected to non-parametric tests ( alpha<0.05 ) . RESULTS Overall , the histological features showed that groups 1 - 4 were quite similar and inferior to group 5 . In groups 1 - 4 the pulp response varied from acute inflammatory cell infiltrate with varying degrees to necrosis . The groups 3 and 4 showed a trend towards better pulp response , since a normal connective tissue could be observed in more than half of the sample . All teeth from group 5 showed normal connective tissue below an amorphous dentin bridge . SIGNIFICANCE Adhesive components ( primer or adhesive ) as well as a composite should be avoided for pulp capping . Ca(OH)(2 ) should be the first choice for pulp capping
Conclusions MTA cements have a higher success rate , with a lower inflammatory response and a more predictable hard dentin barrier formation  than calcium hydroxide cements .
However , there were no differences , in these parameters , when MTA cement was compared with tricalcium silicate cements .
Dental adhesives systems showed the lowest success rates
Introduction Direct pulp capping therapies use bio material s to protect exposed tissues , inducing repair through the production of a mineralized barrier .
The purpose of this study was to compare the effectiveness of bio material s and techniques by means of a systematic review and meta‐ analysis .