PMID: 15241910Jul 10, 2004Paper

4-year clinical performance and survival analysis of Class I and II compomer restorations in permanent teeth

American Journal of Dentistry
Karin Christine HuthReinhard Hickel

Abstract

To evaluate the 4-year clinical performance of the compomer Hytac in Class I and II cavities of permanent posterior teeth. 53 compomer restorations were placed using the self-conditioning adhesive Hytac OSB (total bonding) without additional phosphoric acid-etching according to manufacturer's instructions. Restorations were rated (modified USPHS criteria) at baseline, after 6, 12, 18, 36 and 48 months in relation to tooth type (molar, premolar), size and class of cavities, isolation type (rubber dam, cotton rolls) and use of a calcium hydroxide liner. After 4 years, 39 restorations (73.6%) were available for examination. Statistical analysis was performed using Kaplan-Meier survival analysis with the logrank test and Fisher's exact test for the failure analysis. After 4 years, the success rate was 84.6%, six restorations failed (15.4%). The average annual failure rate was therefore 3.85%. Loss of marginal integrity was the main cause of restoration failure. The probability that a restoration would remain clinically acceptable after 4 years was calculated to be 89% (Kaplan-Meier). No significant performance differences could be found between any of the restoration groups.

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.