Assessment of dentin reaction after Biodentine application

Abstract

Sev eral new cal cium sili cate based ma te ri als have been re cently de vel oped [5]. Bio den tine (Sep to dont, France)-"bio ac tive den tin sub sti tute" is a one among them. This is a mod ern den tine re place ment based on Port land ce ment. The ef fect of "bio ac tive den tin sub sti tute" con sists in origi nat ing min er al ized mi cro conec tions be tween the mate rial and den tin tu bules. Bio ac tive na ture of Bio den tine is based on odon to tropic fea tures caus ing for ma tion of ter tiary den tin and den tin bridges. This is the rea son why it is rec om mended in di rect and in di rect pulp cap ping, per fora tions, apexi fi ca tion, re sorp tions, pulp ex po sures and ret ro grade root fill ing. Its wide use and very good physical prop er ties are the best as sets [9,11,12,14]. The main core of the pow der mix ture are sili cates: tricalcium sili cate and di-calcium sili cate. It also con tains cal cium car bon ate and ox ide as filler, iron ox ide re spon si-ble for shade and zir co nium ox ide as ra dio pa ci fier. Adding cal cium chlo ride to the liq uid part ac cel er ates the sys tem and hy dro solu ble polymer com po nent re duces wa ter in the mix ture. The abil ity of cal cium sili cate to inter act with wa ter pro vide set ting and hard en ing of the ce ment. This is a hy dra tion of the tri cal cium sili cate, which pro duces a hy drated cal cium sili cate gel and calcium hy drox ide. This dis so lu tion pro cess oc curs on the sur face of each grain of cal cium sili cate. The hy drated calcium sili cate gel and the ex cess of cal cium hy drox ide tend to pre cipi tate at the sur face of the par ti cles and in the pores of the pow der, due to satu ra tion of the me dium. The precipi ta tion pro cess is re in forced in sys tems with low wa ter con tent. The un re acted tri cal cium sili cate grains are surrounded by lay ers of cal cium sili cate hy drated gel, which are rela tively im per me able to wa ter, thereby slow ing down the ef fects of fur ther re ac tions. The C-S-H gel forma tion is due to the per ma nent hy dra tion of the tri cal cium sili cate, which gradu ally fills in the spaces be tween the tri cal cium sili cate grains. The hard en ing pro cess re sults from the for ma tion of crys tals that are de pos ited in a super satu rated so lu tion [3,13].

Endodontium — together or separately?

“…The studies of other authors have shown similar effects of MTA when used to cover pulp directly [13]. In both groups, total dentin bridge formation was observed and no pulp inflammation was present, suggesting Biodentine as an alternative to MTA [4,5].…”

A chemical activity evaluation of two dental calcium silicate-based materials

“…Several methods for the determination of the chemical activity of dental materials have been recently recommended [3,4,7,13]. SEM and EDS (used in the present study) are deemed adequate for showing that calcium and silicon ions were incorporated into the layer between examined materials and dentin.…”

“…To investigate the effect of Biodentine and MTA+ application on the teeth samples, the following methods were applied: Scanning Electron Microscopy (to reveal information about the morphology and structure of the sample), Energy Dispersive X-Ray Spectroscopy (so as to characterize the elemental composition and chemical characterization of the analyzed volume) and Raman spectroscopy (a spectroscopic technique based on the inelastic scattering of monochromatic light, and used to study the chemical function groups of the samples) [3,8,13].…”

“…Adding calcium chloride to the liquid accelerates the reaction between the components. The A chemical activity evaluation of two dental calcium silicate-based materials reduction of water is provided by a hydrosoluble polymer [3,9]. Calcium hydroxide and calcium silicate are the principal components of MTA+.…”

Evaluation of the surface structure of composite restorations in light of own pilot research

“…The complexity of the phenomena occurring in the mouth justifies the need for scientific research of biomaterial properties [2], and introduction of any new material to the market requires both experimental and clinical trials. The latter are usually complementary to the laboratory tests necessary for obtaining a full assessment of the material.…”