Clinical evaluation of reasons for replacement of amalgam restorations in patients referring to a dental school in iran (original) (raw)
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Replacements of Amalgam Restorations - a Study
2010
The aim of this study was to register various reasons for replacement or repair of amalgam restorations of patients visiting a dental institution hospital in Peshawar, Pakistan, and to compare the results of the present study with the international studies carried out on this subject. A cross sectional study on 123 patients, aged 10-60 years, visiting for the replacement or repair of their 210 amalgam restorations was carried out over a period of 10 months. These patients were examined clinically and radiographically to find out the reasons of the failed amalgam restorations which needed replacement or repair while the teeth were still vital and restorable. In 123 patients, 210 amalgam restorations were examined. Seven reasons were found responsible for replacement or repair of restorations; Secondary caries (37.61%), marginal degradation (22.38% ), dislodgment of fillings (20.47%), poor anatomy restored (14.76%), fracture of filling’s material (11.42%), macroleakage gap (5.71%) and...
Analyses of long-term clinical behavior of class-II amalgam restorations
Acta Odontologica Scandinavica, 1991
Jokstad A, Mjor IA. Analyses of long-term clinical behavior of class-I1 amalgam restorations. Acta Odontol Scand 1991;49:47-63. Oslo. ISSN 0001-6357. The purpose of the study was to estimate the influence of different clinical variables on the replacement rate of class-I1 amalgam restorations in permanent teeth. The study included 210 patients who had 468 restorations placed by 7 Scandinavian dentists. The observation periods varied between 7 and 10 years. At the time of the last recording 188 restorations remained intact in 88 patients, whereas 68 restorations in 53 patients had been replaced. Eighty-six patients with 212 restorations had dropped out of the study. The most prevalent criteria for replacement were secondary caries ( n = 30) and restoration bulk fractures ( n = 24). Chisquare analyses of the relationship between the prevalence of replacements and the clinical variables indicated effects of the operator and the patients' age and caries activity ( p < 0.001).
Bulk fracture of amalgam restorations?a 5-year controlled clinical trial
Journal of Oral Rehabilitation, 1988
A controlled clinical study, containing 720 posterior amalgam restorations placed in a group of 103 adult patients by three dentists, was used for examination of the influences on the incidence of occlusal and approximal bulk fractures. These fractures were evaluated from black and white photographs, taken annually, of the occlusal surface of the restorations over a 5-year period, using a three point photorating scale for both fracture sites. The influence of the dentist as well as the influence of the alloy and tooth type were statistically analysed. The results of these analyses demonstrated that the dentist, as well as the alloy and tooth type, have a statistically significant influence on the incidence of bulk fracture of amalgam restorations. *This study is part of the researeh programme on Restorations and Restorative Materials.
European Journal of Dentistry, 2012
ABSTRACTObjectives:This study aimed to evaluate in vivo the occurrence of secondary caries and dentin characteristics in permanent molars after traditional amalgam restorations, by means of clinical visual examination, radiographs and laser-induced fluorescence (LF) (DIAGNOdent).Methods:Thirty first permanent molars of 30 schoolchildren in the 7 to14 year-old age group were included. Caries was removed by hand. Thus, indirect pulp capping was performed with glassionomer cement (GIC), the cavity was varnished and amalgam filled. LF was measured before and after cavity preparation and after a 12-month observation period. Dentin color after cavity preparation and after the 12-month observation period was recorded. Recurrent caries was also investigated by visual clinical and radiographic examinations, in addition to dentin thickness between pulp and indirect GIC pulp capping. Data was analyzed by ANOVA for repeated measurements, paired “t” test and descriptive statistic.Results:There w...
The use and repair of dental amalgam restorations as practised in South Africa
Introduction: Research has confirmed that the replacement of defective restorations is the most commonly performed procedure in general practice. Any defect or sign of secondary caries often led to the complete replacement of a dental restoration. The repair or refurbishment of defective dental amalgam restorations is now considered best practice over replacements. aims and objectives: To investigate the use and repair of dental amalgam restorations as practised in South Africa. Methods: Three hundred and twenty-four dentists participated in an electronic cross sectional survey to gather biological data and information on the management of defective amalgam restorations. Analyses included Analysis of Variance (Anova) tests, Chi-square tests, paired t tests and Friedman's test (p-value of <0.05) (SAS Institute Inc., Cary, NC, USA). results: Most dentists (n=62%) reported almost never using dental amalgam and an almost equal number (n=63%) repaired defective amalgam restorations. Resin composite was the most popular material for the repair (n=62%) and replacement (n=78%) of defective amalgam restorations. Dentists in this study relied on their clinical experience to derive their repair techniques. conclusions: Dental amalgam was no longer a preferred material for the restoration of posterior teeth in South Africa. Resin composite was the most widely used to repair or replace defective amalgam restorations. Dentists practised the repair of defective restorations.
SciDoc Publishers, 2019
Amalgam is an alloy of silver, copper, tin and zinc combined with mercury. It has been used as restorative material for more than 150 years. It can be used in individuals of all ages in stress bearing areas where esthetics is not a concern. This aim of the study was to derive an association between age, gender of patients who underwent class I amalgam restorations in maxillary first molars in the South Indian population. A total of 83 case sheets of patients who had undergone class I amalgam restoration in maxillary first molar were reviewed and analyzed statistically for association with age and gender. The patients selected for the study were in the age group of 18-65 years of age. Data was tabulated using excel sheets. The association of age and gender in patients choosing class I amalgam restoration as treatment option, was evaluated statistically using SPSS software. The people included in the study were in the age group of 18- 65 years. 56 out of 83 patients (67.4%) were in 18-30 years of age. But there was no significant association between age and the treatment procedure (p value= 0.805). Out of 83 teeth, 48 (57.8%) were male and 35 (42.1%) were female patients. There was no significant association between gender and class I amalgam restoration, p value= 0.532 (p>0.05). Within the limitations of the study, there was no significant association between age, gender with class I amalgam restoration
The journal of contemporary dental practice, 2010
The aim of this clinical study was to compare the fracture resistance, marginal adaptation, and rate of recurrent caries of bonded and nonbonded amalgam restorations in endodontically treated premolar teeth. A total of 36 patients with endodontically treated maxillary first or second premolars were selected and divided into three groups. The treatments in all groups consisted of lingual cusp coverage and cementation of a prefabricated intracanal post (No. 2 long, Dentatus USA, New York, NY, USA). One type of cavity liner was used for each group as follows: copal varnish (Group A), Amalgambond Plus (Group B), and Scotchbond Multi-Purpose (Group C). The teeth were then restored with Cinalux high-copper spherical amalgam (Cinalux, Sh. Dr Faghihi Dental Co., Tehran, Iran). After one year, fracture resistance, marginal adaptation, and secondary caries were evaluated. Fischer's exact test was used for statistical analysis using a 0.05 percent significance level. There was no significa...
Journal of the American Dental Association, 2007
Background. Limited information is available from randomized clinical trials comparing the longevity of amalgam and resin-based compomer/ composite restorations. The authors compared replacement rates of these types of restorations in posterior teeth during the five-year follow-up of the New England Children's Amalgam Trial. Methods. The authors randomized children aged 6 to 10 years who had two or more posterior occlusal carious lesions into groups that received amalgam (n = 267) or compomer (primary teeth)/composite (permanent teeth) (n = 267) restorations and followed them up semiannually. They compared the longevity of restorations placed on all posterior surfaces using random effects survival analysis. Results. The average ± standard deviation follow-up was 2.8 ± 1.4 years for primary tooth restorations and 3.4 ± 1.9 years for permanent tooth restorations. In primary teeth, the replacement rate was 5.8 percent of compomers versus 4.0 percent of amalgams (P = .10), with 3.0 percent versus 0.5 percent (P = .002), respectively, due to recurrent caries. In permanent teeth, the replacement rate was 14.9 percent of composites versus 10.8 percent of amalgams (P = .45), and the repair rate was 2.8 percent of composites versus 0.4 percent of amalgams (P = .02). Conclusion. Although the overall difference in longevity was not statistically significant, compomer was replaced significantly more frequently owing to recurrent caries, and composite restorations required seven times as many repairs as did amalgam restorations. Clinical Implications. Compomer/composite restorations on posterior tooth surfaces in children may require replacement or repair at higher rates than amalgam restorations, even within five years of placement.
Journal of Dentistry, 2014
j o u r n a l o f d e n t i s t r y 4 2 ( 2 0 1 4 ) 7 8 5 -7 9 2 Composite Restoration Dentist Patient Cavity a b s t r a c t Objectives: This study prospectively analyzed the use of amalgam and resin composite posterior restorations placed by general dentists in relation to dentist, patient and cavity factors. Methods: One thousand posterior restorations placed by a representative sample of general dentists working in the Ministry of Health (MOH), Kuwait, during routine clinical practice were included. Information about the restorations was recorded using a survey questionnaire. Descriptive statistics and multivariate logistic regression analysis were used to determine the factors associated with the use of amalgam versus tooth coloured restoratives. Results: Dentists chose amalgam for 30.8% of the 1000 restorations. Dentists with longer work experience (>15 years) were more likely to choose amalgam (OR = 2.61, 95% CI = 1.06, 6.40). Younger dentists ( 30 years) were less likely to choose amalgam (OR = 0. 45, 95% CI = 0.26, 0.77). Amalgam was more likely to be chosen for patients with poor oral hygiene (OR = 1.58, 95% CI = 1.08, 2.32) and a higher number (!4) of restorations (OR = 1.44, 95% CI = 1.07, 1.94) with large cavity sizes (OR = 6.33, 95% CI = 3.88, 10.32). Tooth-coloured restorations were more likely to be chosen for cavities of smaller sizes. Conclusions: The use of resin composite materials as the dominant choice among dentists in Kuwait reflects the trend worldwide. Nevertheless, clinicians still find a use for amalgam in posterior load-bearing teeth and in the high-caries risk population. Clinical significance: The findings give insight into factors influencing material usage under different clinical conditions and provides information about the perceived deficiencies or shortcomings of resin composite materials in a general dental practice setting. This information can be useful for identifying perceived barriers to the usage of newer restorative materials and finding ways to overcome them.