ADA: WHO releases report on dental materials, amalgam

American Dental Association - WHO releases report on dental materials, amalgam

Dental amalgam is rapidly fading out from dental practice due to the increased use of aesthetic restorative materials, particularly resin-based composites, for restorations in posterior teeth. However, the debate about the safety of dental amalgam seems to be a never-ending subject. Amalgam opponents go as far as to request this material to be banned due to the toxicity and health issues associated with mercury (oral lesions, autoimmune disorders, chronic illnesses etc.)

In a recent report, the World Health Organization (WHO) states that dental amalgam remains a dental restorative material of choice reaffirming the safety of this material. Nevertheless, the WHO report emphasizes that alternative materials and preventive measures should be further improved and implemented.

In 2009, ADA and FDA agreed that dental amalgam should not be restricted from dental practice since the scientific literature supports amalgam as "a valuable, viable and safe choice for dental patients". Read more about this in another post.

It seems that amalgam will eventually cease to be used in dentistry not because of its safety issues but because of considerable improvements of aesthetic materials.

Mineral Trioxide Aggregate (MTA): Free full text articles II

To see previously published list of free full text articles on MTA (part I), please click here.

Endodontics - Case reports
Unal GC, Maden M, Isidan T. Repair of Furcal Iatrogenic Perforation with Mineral Trioxide Aggregate: Two Years Follow-up of Two Cases. Eur J Dent. 2010 Oct;4(4):475-81.  

Yildirim T, Gencoglu N. Use of mineral trioxide aggregate in the treatment of large periapical lesions: reports of three cases. Eur J Dent. 2010 Oct;4(4):468-74.

Abarajithan M, Velmurugan N, Kandaswamy D. Management of recently traumatized maxillary central incisors by partial pulpotomy using MTA: Case reports with two-year follow-up. J Conserv Dent. 2010 Apr;13(2):110-3.

Chhabra N, Singbal KP, Kamat S. Successful apexification with resolution of the periapical lesion using mineral trioxide aggregate and demineralized freeze-dried bone allograft. J Conserv Dent. 2010 Apr;13(2):106-9.

Adiga S, Ataide I, Fernandes M, Adiga S. Nonsurgical approach for strip perforation repair using mineral trioxide aggregate. J Conserv Dent. 2010 Apr;13(2):97-101.

Ozbas H, Subay RK, Ordulu M. Surgical retreatment of an invaginated maxillary central incisor following overfilled endodontic treatment: a case report. Eur J Dent. 2010 Jul;4(3):324-8.

Araújo RA, Silveira CF, Cunha RS, De Martin AS, Fontana CE, Bueno CE. Single-session use of mineral trioxide aggregate as an apical barrier in a case of external root resorption. J Oral Sci. 2010;52(2):325-8.

Khatavkar RA, Hegde VS. Use of a matrix for apexification procedure with mineral trioxide aggregate. J Conserv Dent. 2010 Jan;13(1):54-7.

Mirikar P, Shenoy A, Mallikarjun GK. Nonsurgical management of endodontic mishaps in a case of radix entomolaris. J Conserv Dent. 2009 Oct;12(4):169-74.

Endodontics - scientific articles
Orosco FA, Bramante CM, Garcia RB, Bernardineli N, de Moraes IG. Sealing ability, marginal adaptation and their correlation using three root-end filling materials as apical plugs. J Appl Oral Sci. 2010 Mar-Apr;18(2):127-34.

Biocompatibility
Lessa FC, Aranha AM, Hebling J, Costa CA. Cytotoxic effects of White-MTA and MTA-Bio cements on odontoblast-like cells (MDPC-23). Braz Dent J. 2010 Jan;21(1):24-31.

Cintra LT, Bernabé PF, de Moraes IG, Gomes-Filho JE, Okamoto T, Consolaro A, Pinheiro TN. Evaluation of subcutaneous and alveolar implantation surgical sites in the study of the biological properties of root-end filling endodontic materials. J Appl Oral Sci. 2010 Feb;18(1):75-82.

Chemical analysis
Han L, Okiji T, Okawa S. Morphological and chemical analysis of different precipitates on mineral trioxide aggregate immersed in different fluids. Dent Mater J. 2010 Oct 14;29(5):512-7.

Silorane technology in restorative dentistry - material properties and clinical application

I recently published a review article in the Serbian professional journal "Stomatolog" ["Dentist"] on Filtek Silorane material properties and clinical application steps. The article is in Serbian but I would be happy to translate it to English for interested colleagues. Contact me at vesna.miletic@gmail.com

Abstract

Polymerization shrinkage remains one of the main weaknesses of composite materials. Silorane technology significantly reduces material shrinkage compared to methacrylate composites. This review article compares chemical composition and polymerization process of methacrylate- and silorane-based composites. Systematically are reviewed studies on mechanical, aesthetic, antibacterial and chemical properties of Filtek Silorane, as well as its interaction with tooth tissues. Lower polymerization shrinkage and microbial adherence and comparable mechanical properties have been reported for Filtek Silorane compared to methacrylate-based composites. In the only clinical study that has been published so far, marginal adaptation of Filtek Silorane was found to be inferior than the nanocomposite Ceram.X  However, low inter-examiner reliability questions the results of this clinical study and scientific literature lacks more information on clinical performance of Filtek Silorane.