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Strip Crowns for Primary Incisors
Published in M S Duggal, M E J Curzon, S A Fayle, K J Toumba, A J Robertson, Restorative Techniques in Paediatric Dentistry, 2021
M S Duggal, M E J Curzon, S A Fayle, K J Toumba, A J Robertson
Where little enamel remains following removal of caries, bonding of composite resin to both dentine and enamel is important for retention of the final restoration. Two bonding systems that will bond to dentine micromechanically are presently available. These are either resin-based (such as Gluma 2000) or solvent-based (such as ABC). Either are suitable for the strip crown technique.
An Introduction to Bioactivity via Restorative Dental Materials
Published in Mary Anne S. Melo, Designing Bioactive Polymeric Materials for Restorative Dentistry, 2020
Mary Anne S. Melo, Ashley Reid, Abdulrahman A. Balhaddad
In operative dentistry, composite resin restorative materials represent a set of materials including bulk composite, dental adhesives, and dental primers (adhesion promoter) with a similar primary composition (Cramer et al. 2011). The bulk composite, representing the body of the restoration, does not adhere directly to the tooth requiring the application of an intermediate layer to connect the dental substrates of different resin-based materials. Dental adhesives and primers are the main reason for the bonding of the bulk composite to tooth substrates, such as enamel and dentin, and the formation of an interlocked interface.
Factors Controlling the Microflora of the Healthy Mouth
Published in Michael J. Hill, Philip D. Marsh, Human Microbial Ecology, 2020
Dental restorations made of gold, silver amalgam, porcelain, or plastic materials accumulate dental plaque which is similar to that on natural teeth.32,119 The clinical adhesiveness of different materials becomes the same in spite of differences in basic surface chemical properties, because a film of salivary glycoproteins (acquired pellicle) covers any surface inserted in the mouth.120 The rate and quantity of plaque formation may, however, vary with the degree of surface roughness, and increased plaque formation has been demonstrated on aged composite resin fillings, which become more rough after 3 to 4 years in the mouth.121 A major clinical problem is plaque formation at imperfectly fitting margins of restorations.
Dental caries and risk of newly-onset systemic lupus erythematosus: a nationwide population-based cohort study
Published in Current Medical Research and Opinion, 2023
Wuu-Tsun Perng, Kevin Sheng-Kai Ma, Hsin-Yu Hung, Yi-Chieh Tsai, Jing-Yang Huang, Pei-Lun Liao, Yao-Min Hung, James Cheng-Chung Wei
Follow up from 1 January 2005 as the index date, the incidence rate per 100,000 person-months of SLE in individuals with dental caries was 1.07 (95% confidence interval [CI] = 0.99–1.16), while in individuals without dental caries was 0.54 (95% CI = 0.46–0.63). The Rate Ratio in individuals with dental caries was 1.98 (95% CI = 1.65–2.38, p < .0001). To investigate the effect of dental filling material on incidence rates per 100,000 person-months, this study further stratified individuals with dental filling from 1997 to 2004 into three groups, amalgam only (0.92, 95% CI = 0.73–1.16), composite resin only (1.04, 95% CI = 0.90–1.19), and both amalgam and resin (1.14, 95% CI = 1.01–1.27). Among these three groups, the Rate Ratio was 1.71 (95% CI = 1.26–2.27, p < .0004), 1.92 (95% CI = 1.55–2.38, p < .0001), and 2.10 (95% CI = 1.72–2.56, p < .0001), respectively (Table 2).
Development of antibacterial composite resin containing chitosan/fluoride microparticles as pit and fissure sealant to prevent caries
Published in Journal of Oral Microbiology, 2022
Chun-Cheng Lai, Chun-Pin Lin, Yin-Lin Wang
C/F was prepared from chitosan/fluoride microparticles and a light-curable polymer matrix. This polymer matrix was prepared by mixing Bis-GMA, TEGDMA, EDMAB, and CQ in a weight ratio of 69:30:1:1 (Sigma-Aldrich, St. Louis, MO). The previously prepared silanized silica nanoparticles and C/F act as inorganic fillers, making up 20% of the composite resin. The polymer matrix was temporarily heated to 50°C, which enhanced the flowability and avoided trapped bubbles. Subsequently, the inorganic fillers were slowly added and stirred into matrix. The experimental composite resin was divided into three groups based on the composition of inorganic fillers: 1) 0% C/F and 20% silanized silica nanoparticles, abbreviated as 0% C/F; 2) 2% C/F and 18% silanized silica nanoparticles, abbreviated as 2% C/F; and 3) 4% C/F and 16% silanized silica nanoparticles, abbreviated as 4% C/F. ClinproTM fissure sealant (3 M ESPE, USA) was used as a control. Subsequent polymerization was carried out using an LED curing light with luminosity over 1,200 mw/cm2 and a wavelength of 460–510 nm (Motion LED-320D, Taipei, Taiwan).
Ten-year follow-up on adoption of endodontic technology and clinical guidelines amongst Danish general dental practitioners
Published in Acta Odontologica Scandinavica, 2018
Merete Markvart, Helena Fransson, Lars Bjørndal
The combined response rate was lower in 2013 than the response rate in the 2003 questionnaire. The frequencies of GDPs reporting to use rubber dam often, increased from 4 to 29% and using apex locator often from 15 to 54% (p < .0001) when comparing the study groups of 2003 and 2013. A significantly higher proportion was also reporting use of rotary NiTi instruments; from 10% of the GDPs in 2003 to 69% in 2013 (p < .0001) (Table 1). Although the proportion of GDPs reporting use of stainless steel instrument was lower in 2013 than 2003, more than half (56%) of the responders still used stainless steel instruments (Table 1). There was also a significant decrease in the number of treatment visits for molar instrumentation. In 2013, only 6% of the GDPs used more than two appointments for instrumentation (p < .0001). Eighty-six percent of the dentists were in 2013 often using composite resin for coronal sealing compared to 81% in the 2003 group (p < .019), whereas the often use of indirect restorations had significantly decreased (p < .001).