Tamponade effect of resorbable biological barrier in quality of obturation in primary molar

Abstract

Aim Physical properties of obturating materials have a direct effect on the quality of obturation; less viscous material will tend to extrude beyond the apex. We hypothesize that the use of absorbable gelatin sponge (AGS) can prevent the extrusion of these materials. This study aimed to evaluate the quality of obturation in root canals filled with iodoform‐calcium hydroxide (Metapex) premixed paste and Metapex with AGS (MAGS) in primary molars. Methods This in vivo study comprised 60 primary mandibular molars which after instrumentation were divided into 2 groups according to the obturation material used, Metapex and MAGS, followed by radiographic evaluation to assess the quality of the obturation. The χ2‐test was applied for statistical analysis. Results There was a statistically significant difference between Metapex and MAGS groups in achieving optimum obturation (P < .001). Metapex and MAGS exhibited 86.65% and 38.88% optimum obturation respectively. The overfilling of root canals effectively reduced from 38.88% to 4.44%. Conclusion The addition of AGS to Metapex causes a “tamponade effect”, which reduces the tendency of Metapex to extrude beyond the root apex. Root canal obturation using a modified filling paste like MAGS is effective in obtaining optimum obturation in primary teeth.

Clinical and Radiographic Evaluation of Different Obturating Materials as Biological Barrier in Quality of Obturation of Pulpectomized Primary Anterior Teeth

“…While after 1 week follow up the clinical success was raised to 66.7% and after 3 months follow up the clinical success was 100% due to the complete absorption of material being extruded beyond the apex, which was confirmed by periapical radiograph. These results were compatible with Johnson et al, 2006 (24) who advocated the plugging of Colla Cote in the apical 3rd. In their findings, they reported an overfill in only 16% of Colla Cote-treated root canals and 42% of non-Colla Cote-treated canals.…”