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 .
Clinical and histological evaluation of white ProRoot MTA in direct pulp capping.
PURPOSE To evaluate the clinical , radiographical and histological findings in human third molars in which mechanical pulp exposures were capped with white ProRoot mineral trioxide aggregate ( WMTA ) . METHODS Forty-eight human third molars , caries-free or with incipient caries , scheduled to be extracted , were used and r and omly divided into two groups : Group A : ( n= 24 ) received WMTA and control Group B : ( n= 24 ) received chemical set calcium hydroxide ( Dycal ) . The teeth were isolated with rubber dam and Class I cavities prepared . Pulp exposure was performed using a sterile diamond bur and confirmed by frank bleeding . A sterile cotton pellet dipped in saline solution was placed over the exposure for 60 seconds . The preparation was then lightly rinsed with water and gently air-dried . WMTA or CH was placed over the exposure site followed by a small amount of a light-cured compomer . After etching with 35 % phosphoric acid gel for 15 seconds , rinsing and blot drying , Prime and Bond NT adhesive was applied and light-cured . The cavity was then restored with a resin composite and light-cured . Evaluations were performed by phone after 7 days and clinical ly at 30 + /- 5 and 136 + /- 24 days , using st and ardized tests and radiographs . The teeth were extracted after 136 + /- 24 days ; the roots were cut + /- 4 - 5 mm from the apex to allow for rapid fixation in 10 % neutral buffered formalin . They were then processed for routine histological evaluation , embedded in paraffin , sectioned and stained with hematoxylin and eosin and Brown and Brenn for recognition of bacteria . Statistical analyses were performed using a Mann-Whitney U-test , a Chi-square test , a Fisher 's exact test and an ANOVA . RESULTS No significant differences in post-operative sensitivity were reported after 7 days between the two material s ( P > 0.05 ) . Clinical examination demonstrated no significant differences at 30 + /- 5 days ( P > 0.05 ) and at 136 + /- 24 days ( P > 0.05 ) . Histological findings : 45 of 48 teeth were suitable for microscopic evaluation ( 22 with WMTA and 23 with CH ) . Twenty from the WMTA and 18 from the CH group had developed a bridge . No statistically significant differences were found for superficial and deep inflammatory cell response ( P > 0.05 ) , presence of a dentin bridge ( P > 0.01 ) , and pulp vitality ( P > 0.01 ) , between WMTA and calcium hydroxide . A statistically significant difference was found for the diameter of exposure ( P < or = 0.05 ) between WMTA ( x= 0.35 + /- 0.19 mm ) and CH ( x= 0.25 + /- 0.09 mm ) . Only a minimal association between clinical and histological findings could be established for either material
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 .