Removal Of Carious Lesions Research Articles

Diagnosis and Assessment of Dental Caries Using Novel Bioactive Caries Detecting Dye Solution.

The goal of materials should be early caries detection, removal of carious lesions, and reduction of dentin hypersensitivity. Thus, the study aims to determine the efficacy of a bioactive caries detecting dye (BCD) for the diagnosing and mechanical removal of occlusal and proximal dental caries. Patients with occlusal (A1, A2) and proximal carious lesions (B1, B2) were treated with the rotary technique and BCD solution on 120 teeth (n = 60 for each). Group 1: Excavation was performed using diamond points. Group 2: 0.5 mL of BCD solution was scrubbed for 20 sec and excavation was performed with a sharp spoon excavator. Post-excavation cavity volume analysis was performed using a 3D scanner. The time required, VAS for pain, VAS for facial expression, and sound eye motor scoring were scored during excavation. Post-restoration evaluation was performed at 3, 6, and 12 months (FDI criteria). The chi-square test revealed that the A1 (197.90 30.97 s) and B1 (273.06 69.95 s) had significantly less mean procedural time than the A2 (292.13 44.87 s) and B2 (411.86 88.34 s). BCD (A2, B2) group showed good patient acceptance, less pain during caries excavation VAS (p = 0.001, FACE (p = 0.001), and SEM (p < 0.001) analysis than the rotary group. There was a statistically insignificant difference between groups immediately (p = 0.235), (p = 0.475) and after 24 h (p = 0.561), (p = 0.688). Color score, hardness of excavated surface, and caries removal score for occlusal and proximal groups showed insignificant differences between the groups. BCD group showed significantly less mean caries excavated volume for the occlusal group (p = 0.003) as compared to the proximal group (p = 0.417) evaluated by 3D scanner. Evaluation of restoration after 3-, 6-, and 12 months intervals (Occlusal caries group (p = 0.247), (p = 0.330), and (0.489) and Proximal caries group (p = 0.299), (p = 0.594), and (0.494)) was acceptable for both the groups. BCD helps in identification of dental caries clinically, radiographically, and in effective removal of denatured teeth with less pain or sensitivity.

In vitro antibacterial activity of green tea-loaded chitosan nanoparticles on caries-related microorganisms and dentin after Er:YAG laser caries removal.

This study aimed to determine the inhibitory effects of green tea (Gt), EGCG, and nanoformulations containing chitosan (Nchi) and chitosan+green tea (Nchi+Gt) against Streptococcus mutans and Lactobacillus casei. In addition, the antibacterial effect of nanoformulations was evaluated directly on dentin after the selective removal of carious lesion. At first, the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) against S. mutans and L. casei isolates were investigated. In parallel, dentin specimens were exposed to S. mutans to induce carious lesions. Soft dentin was selectively removed by Er:YAG laser (n=33) or bur (n=33). Remaining dentin was biomodified with Nchi (n=11) or Gt+Nchi (n=11). Control group (n=11) did not receive any treatment. Dentin scraps were collected at three time points. Microbiological analyses were conducted and evaluated by agar plate counts. Gt at 1:32 dilution inhibited S. mutans growth while 1:16 was efficient against L. casei. EGCG at 1:4 dilution completely inhibited S. mutans and L. casei growth. Independently of the association with Gt, Nchi completely inhibited S. mutans at 1:4 dilution. For L. casei, different concentrations of Nchi (1:32) and Nchi+Gt (1:8) were required to inhibit cell growth. After selective carious removal, viability of S. mutans decreased (p<0.001), without difference between bur and Er:YAG laser (p>0.05). Treatment with Nchi and Nchi+Gt did not influence the microbial load of S. mutans on dentin (p>0.05). Although variations in concentrations were noticed, all compounds showed antibacterial activity against S. mutans and L. casei. Both bur and Er:YAG laser have effectively removed soft dentin and reduced S. mutans counts. Nanoformulations did not promote any additional antibacterial effect in the remaining dentin.

Minimally invasive treatment of dental caries, an update

The importance of this research lies in the effectiveness of the different minimally invasive techniques for the management of carious lesions. Objective: To analyze the minimally invasive treatment for the removal of carious lesions. The techniques evaluated were: conventional method, ART, papacarie, laser and abrasive air. Methodology: A compilation of articles published in the last 5 years was carried out using the PubMed electronic database. Abstracts and full texts were identified that included information on the techniques for minimally invasive treatment of carious lesions: the conventional method, ART, papacarie, laser and abrasive air. Results: The conventional technique is the most commonly used at present, but it is the most aggressive because it removes both healthy and infected tissue. ART is one of the most economical and least painful measures for caries management. Papacarie is a minimally invasive chemical removal method and does not require local anesthesia. Laser for caries removal is expensive, but it is one of the least abrasive ways to manage it, and the abrasive air does not irritate pulp or adjacent tissues. Conclusions: Removal of dental caries with rotary instruments is frequently associated with thermal and pressure effects on the pulp, resulting in pain. Due to the shortcomings of the bur, alternatives such as chemo-mechanical caries removal with sharp instruments (ART), laser and abrasive air were developed, which have a disintegrating effect on the caries tissue, while leaving healthy dentin largely intact.

Biomimetic Dentistry: Less Drilling More Healing

Biomimetic dentistry is an alternative approaching dentistry for dental caries management. It takes the potential advantageous features of maintaining, mimicking and replacing of natural dental tissues (enamel &amp; dentin) in the mouth without using toxic restorative materials. Ultraconservative treatment is recommended for treating cavitated dentin lesions. Thus, Atraumatic Restorative Treatment is the most commonly used technique these days by dental clinicians worldwide. It is intended to both prevent dental caries and also to stop its further progression in the long-term. This short over view will attempt to provide a better understanding of biomimetic dentistry in terms of preventive/conservative approach for carious lesion removal and also to give a clinical perspective for Libyan dental clinicians.

Mineral exchange within restorative materials following incomplete carious lesion removal using 3D non-destructive XMT subtraction methodology

ObjectivesThe objective of this study was to quantify the changes in mineral and selected element concentrations within residual carious dentine and restorative materials following incomplete carious lesion removal (ICLR) using different cavity liners, with non-destructive subtraction 3D-X-ray Microtomography (XMT, QMUL, London, UK). Materials and methodsA total of 126 extracted teeth with deep dental caries were assessed using International Caries Risk and Assessment (ICDAS). Eight teeth were subsequently selected after radiographic evaluation. Each lesion was removed, leaving a thin layer of leathery dentine at the deepest part of cavity. Different cavity lining materials were placed; Mineral Trioxide Aggregate (MTA), calcium hydroxide, (Ca(OH)2), resin-based material (RBM). For each, the restorative material was an encapsulated glass ionomer (GIC) and the control group had a GIC restoration alone. Each tooth was immediately placed in Simulated Body Fluid (SBF). All samples were then imaged using XMT at baseline, and three weeks after treament. The XMT images were then subtracted to show the mineral concentration changes three weeks after treatment. ResultsThere were significant increases in mineral concentrations within the residual demineralised dentine in individual teeth treated with Ca(OH)2, MTA, RBM, and GIC following immersion in SBF for three weeks. GIC group without any liners showed the greatest increase in mineral concentration, followed by MTA and Ca(OH)2. ConclusionMineral changes in demineralised dentine and within restorative materials are quantifiable using non-destructive 3D-XMT subtraction methodology. This laboratory study suggested that calcium, phosphate and strontium ion-exchange occurs with GIC, MTA and Ca(OH)2 in deep dentinal lesions following ICLR. Clinical relevanceIn clinical practice, incomplete carious lesion removal could be performed to avoid the dental pulp exposure. 3D non-destructive XMT subtraction methodology in a laboratory setting is advantageous to provide evidence for different restorative materials on deep carious lesions prior to clinical investigations.

The effect of repeated preheating on diametral tensile strength of composite resin with different fillers

Background: The development of adhesive systems has made the removal of carious lesion a minimally invasive procedure. Composite resin is the material of choice today, but the filler composition of the resin varies. Packable composite resin has good mechanical properties, but its high viscosity makes it hard to manipulate. Several methods, such as preheating, are used to decrease this viscosity. A syringe of composite resin might be preheated several times, but the effect of repeated preheating is unknown. Objectives: The purpose of this research was to analyze the effect of repeated preheating on the mechanical properties of a composite resin with different fillers. Method: Microhybrid, nanohybrid, and nanofill composite resins were preheated (ten times, twenty times, and control), molded into cylinder molds 6 mm in diameter and 3 mm in height, flattened with a celluloid strip, and polymerized with an light-emitting diode light-curing unit for 40 s. A total of 180 specimens were tested. The specimens were divided into two groups: Group 1 was immediately tested using a universal testing machine. Group 2 was soaked in 37°C artificial saliva for 24 h before testing. Each specimen was tested using the universal testing machine with the pressure side with a 1 mm/s crosshead speed. Result: Nanohybrid composite resin had the most stable diametral tensile strength after repeated preheating, whereas nanofill composite had the weakest strength. The increase and decrease in the diametral tensile strength in each group were not statistically significant. Conclusion: Repeated preheating does not significantly affect the diametral tensile strength of composite resin.

Caries removal with Er:YAG laser followed by dentin biomodification with carbodiimide and chitosan: Wettability and surface morphology analysis.

This study aimed to investigate dentin wettability and surface morphology after selective removal of carious lesion by erbium-doped yttrium aluminum garnet (Er:YAG) laser, followed by dentin biomodification with carbodiimide (EDC) and chitosan (CHI). Seventy-eight bovine dentin specimens were submitted to caries induction. Specimens were distributed according to methods of carious removal (n = 39): bur at low-speed (40,000 rpm) or Er:YAG laser (noncontact mode, 250 mJ/pulse and 4Hz). All specimens were etched with 35% phosphoric acid, and subdivided according to dentin biomodification (n = 13): Control (no biomodification), EDC or CHI. The contact angle (n = 10) between adhesive system (3M ESPE) and dentin surface was measured by a goniometer. Eighteen specimens (n = 3) were analyzed by scanning electron microscopy. Data were analyzed by two-way ANOVA and Tukey's test (α = .05). The method used to remove carious lesion did not influence the wettability of dentinal surface (p = .748). The angles produced on the remaining dentin after biomodification were influenced (p = .007). CHI promoted higher contact angles (p = .007) and EDC did not differ from the control group (p = .586). In the bur-treated group, most tubules were open, regardless of which biomodifier was used. Laser modified the organic matrix layer. CHI promoted partially closed tubules in some areas while EDC exposed dentinal tubules. Regardless of which method was used for selective removal of carious lesion, biomodification with EDC did not affect the dentin wettability, whereas CHI changed the wettability of remaining dentin. Both biomodifiers promoted a slight change on dentin morphology.

Effect of Er:YAG laser irradiation and chitosan biomodification on the stability of resin/demineralized bovine dentin bond

ObjectiveThe purpose of this study was to evaluate the effect of Er:YAG laser for selective removal of carious lesion, followed by biomodification with chitosan on the microtensile bond strength (µTBS), adhesive interface, dry mass loss and hydroxyproline release (HYP). MethodsArtificial lesions were created in 104 bovine dentin blocks. Blocks were divided according to caries removal method: bur or Er:YAG laser. Seventy-six blocks were acid etched and subdivided according to dentin biomodification: no chitosan and 2.5% chitosan. Composite resin restorations were performed. Blocks were sectioned into beams and stored in water. After 24 h, 6 and 12 months, beams were submitted to μTBS test (n = 10) and analysis of adhesive interface by SEM (n = 3). The other 28 blocks were sectioned into beams and initial dry mass (DM) was determined (n = 7). Beams were stored and after 7 days, DM was redetermined. HYP release (n = 7) was evaluated by ELISA. Data were analyzed by ANOVA and Bonferroni's tests (α = 0.05). ResultsAfter 24 h, the highest µTBS was found for bur (p < 0.001). After 6 months, methods were similar (p = 0.432). After 12 months, laser-irradiated dentin showed the highest µTBS values (p = 0.025). Chitosan promoted higher µTBS values after 6 (p = 0.011) and 12 months (p < 0.001) preserving adhesive interface. Dry mass loss and HYP release were not influenced (p > 0.05) by caries removal method or by dentin biomodification. ConclusionThe bond strength to demineralized dentin reduced over 50% in all groups after water storage. From 6 months of water storage, Er:YAG laser irradiation and biomodification with chitosan maintained the stability of the resin-dentin bonds, but did not influence dry mass loss and HYP release.

Self-limiting excavation seems to increase the odds of success 1 year after deep carious lesion removal compared with a conventional protocol

Self-limiting excavation seems to increase the odds of success 1 year after deep carious lesion removal compared with a conventional protocol

Selective Ablation of Carious Lesions using an Integrated Near-IR Imaging System and a Novel 9.3-µm CO2 Laser.

Previous studies have shown that reflectance imaging at wavelengths greater than 1200-nm can be used to image demineralization on tooth occlusal surfaces with high contrast and without the interference of stains. In addition, these near-IR imaging systems can be integrated with laser ablation systems for the selective removal of carious lesions. Higher wavelengths, such as 1950-nm, yield higher lesion contrast due to higher water absorption and lower scattering. In this study, a point-to-point scanning system employing diode and fiber lasers operating at 1450, 1860, 1880, and 1950-nm was used to acquire reflected light images of the tooth surface. Artificial lesions were imaged at these wavelengths to determine the highest lesion contrast. Near-IR images at 1880-nm were used to demarcate lesion areas for subsequent selective carious lesion removal using a new compact air-cooled CO2 laser prototype operating at 9.3-µm. The highest lesion contrast was at 1950-nm and the dual NIR/CO2 laser system selectively removed the simulated lesions with a mean loss of only 12-µm of sound enamel.

Evaluation of dental explorer and visual inspection for the detection of residual caries among Greek dentists.

Objectives:The objective of this study was to assess the effect of the operator's degree of clinical experience on the residual caries diagnosis through visual inspection and tactile sensation.Materials and Methods:The participants were asked about the years of their clinical practice, any further training concerning cariology, their familiarity with the minimal invasive philosophy, and the techniques that they use to remove dental caries and detect when to stop the removal of carious tissues. In addition, an in vitro diagnostic test was conducted. Carious teeth were excavated to a level selected in random. Teeth were examined by each participant individually. Initial examination was performed by visual inspection. Subsequently, a dental explorer was used concerning the potential need for further removal of dental tissues. A sample of 380 dentists and dental school students were selected for the purposes of this study.Results:Dental students presented statistically significant better sensitivity, than dentists from both age groups, during both visual inspection and tactile sensation of residual caries. Participants' ability to diagnose residual caries during cavity preparation was independent of their years of experience.Conclusions:During the removal of carious lesions, with the goal of limiting the sacrifice of healthy structures and the leftover of residual caries, clinicians should combine a selective removal technique and the attentive visual inspection, with at least one further diagnostic method, aside from the dental explorer. Tactile examination of residual caries solely with the dental explorer must be used with attention.

Clinical evaluation of three adhesive systems in class V carious lesions

Purpose The purpose of this study was to evaluate the clinical performance of three types of adhesive systems (Futurabond universal adhesive in a self-etch mode, Tetric N-bond self-etch adhesive, and Single bond universal adhesive in a total etch mode) in class V carious lesions over 1 year. Materials and methods A total of 20 patients with three carious cervical lesions were participated in this study after obtaining informed consent. A total of 60 restorations were placed. The distributions of adhesive materials and the teeth locations were randomized. Cavities were prepared limited to just removal of carious lesions with incisal and gingival margins in enamel and beveling of incisal cavosurface margin. All adhesives were applied following manufacturer's directions. All cavities were restored with Grandio SO composite resin following manufacturer's directions. Finishing and polishing was performed using finishing burs and polishing discs. Each restoration was clinically evaluated at baseline (24 h), 6 months and 1 year for retention, margin integrity, margin discoloration, secondary caries, and postoperative sensitivity using modified United state public health service (USPHS) criteria. Results The recall rate was 100% after 1 year. Also the retention rate for all restorations was 100% after 1 year. Using χ2-test, there was no statistically significant differences between the tested groups at all evaluation periods regarding marginal adaptation, marginal discoloration, and postoperative sensitivity (P > 0.05). None of restoration had secondary caries at any evaluation period. Conclusion Within the limitation of this short-term evaluation, there was no significant clinical difference between adhesives. Clinical significances All tested adhesive systems achieved excellent results after 1 year of clinical service.

Selective removal of carious lesion with Er:YAG laser followed by dentin biomodification with chitosan.

The aim of this study was to evaluate the effect of Er:YAG laser for selective removal of carious lesion, followed by biomodification with chitosan gel where the subsurface microhardness, chemical composition, and morphological changes of the residual caries-affected dentin were examined. Artificial dentinal lesions were created by pH-cycling method (14days) in 104 bovine specimens (5×5mm). Specimens were randomly divided according to the carious removal method: bur (low-speed handpiece) or Er:YAG laser (250mJ/4Hz). Specimens were treated with 35% phosphoric acid and were subdivided into two groups according to dentin biomodification: without chitosan (control) and 2.5% chitosan. Forty specimens were restored with an adhesive system and composite resin. Subsurface microhardness tests were performed in sound dentin, caries-affected dentin, residual caries-affected dentin, and after the restoration. The other 64 specimens were subjected to SEM-EDS atomic analysis. Data were statistically analyzed (p<0.05). After the Er:YAG laser excavation, the microhardness value of residual caries-affected dentin was higher (p<0.05) than bur-treated dentin. A significant decrease in the amount of Ca, P, and Ca/P ratio was found after the removal of carious lesions with Er:YAG laser (p<0.05). The biomodification with chitosan did not influence the microhardness and atomic percentage of Ca, P, and Ca/P ratio of residual caries-affected dentin (p>0.05). SEM analysis showed morphological changes on residual caries-affected dentin (p>0.05). The selective removal of carious dentin with Er:YAG laser increased microhardness of residual caries-affected dentin, changing its surface morphology and chemical composition. The biomodification with chitosan did not influence the structural and chemical composition of residual caries-affected dentin.

Fs-laser ablation of teeth is temperature limited and provides information about the ablated components.

The goal of this work is to investigate the thermal effects of femtosecond laser (fs-laser) ablation for the removal of carious dental tissue. Additional studies identify different tooth tissues through femtosecond laser induced breakdown spectroscopy (fsLIBS) for the development of a feedback loop that could be utilized during ablation in a clinical setting. Scanning Election Microscope (SEM) images reveal that minimal morphological damages are incurred at repetition rates below the carbonization threshold of each tooth tissue. Thermal studies measure the temperature distribution and temperature decay during laser ablation and after laser cessation, and demonstrate that repetition rates at or below 10kHz with a laser fluence of 40 J/cm2 would inflict minimal thermal damage on the surrounding nerve tissues and provide acceptable clinical removal rates. Spectral analysis of the different tooth tissues is also conducted and differences between the visible wavelength fsLIBS spectra are evident, though more robust classification studies are needed for clinical translation. These results have initiated a set of precautionary recommendations that would enable the clinician to utilize femtosecond laser ablation for the removal of carious lesions while ensuring that the solidity and utility of the tooth remain intact.

Selective Laser Ablation of Carious Lesions using Simultaneous Scanned Near-IR Diode and CO2 Lasers.

Previous studies have established that carious lesions can be imaged with high contrast using near-IR wavelengths coincident with high water absorption, namely 1450-nm, without the interference of stains. It has been demonstrated that computer-controlled laser scanning systems utilizing IR lasers operating at high pulse repetition rates can be used for serial imaging and selective removal of caries lesions. In this study, a point-to-point scanning system was developed integrating a 1450-nm diode laser with the CO2 ablation laser. This approach is advantageous since it does not require an expensive near-IR camera. In this pilot study, we demonstrate the feasibility of a combined NIR and IR laser system for the selective removal of carious lesions.

CONSERVAREA STRUCTURII DURE DENTARE PRIN DIAGNOSTIC MODERN UTILIZÂND LASER CU LUMINĂ FLUORESCENTĂ (DIAGNODENT PEN 2190) ŞI TRATAMENT MINIM INVAZIV – CAZ CLINIC

Caries diagnosis should be done in the early stages in order to preserve long-term hard dental structures. In addition to that, the cavity lesions treatment should use adhesive materials for crown obturation which allow strictly carious lesion removal and do not require the creation of retention forms, involving an additional sacrifice of dental tissues, thus jeopardizing the tooth resistance. The study presents the case of a 9 years old, male patient who had multiple cavities in the mixed dentition. The designed treatment plan aimed, firstly, at assessing the degree of damage, trough cavities, of the four 6-year molars existing on the arcades and the choice of techniques and materials for coronal restoration following ART concept (Atraumatic Restorative Treatement). Cavities diagnosis was made by combining conventional methods (visual inspection, inspection and palpation by probe, retro alveolar radiography and OPG) and modern methods (laser fluorescence DIAGNOdent Pen 2190). The prime molars 36, 46 treatment consisted in the creation of some VI class cavities, than plugged with glassionomer cement (Fuji IX) due to increased and prolonged release of fluoride, while the 16, 26 molars treatment was achieved by incipient lesions remineralization by topical application of a fluoride varnish containing 5% sodium fluoride (Profluorid varnish, Voco GmbH).

Randomized controlled clinical trial of long-term chemo-mechanical caries removal using Papacarie™ gel.

ObjectivesCompare the effectiveness of PapacarieTM gel for the chemo-mechanical removal of carious lesions on primary teeth to conventional caries removal with a low-speed bur with regard to execution time, clinical aspects and radiographic findings. Material and MethodsA randomized controlled clinical trial with a split-mouth design was carried out. The sample was composed of 20 children aged four to seven years, in whom 40 deciduous teeth were randomly divided into two groups: chemo-mechanical caries removal with PapacarieTM and removal of carious dentin with a low-speed bur. Each child underwent both procedures and served as his/her own control. Restorations were performed with glass ionomer cement. The time required to perform the procedure was also analyzed. The patients underwent longitudinal clinical and radiographic follow-up of the restorations. ResultsNo statistically significant difference between groups was found regarding the time required to perform the procedures and the radiographic follow up. Statistically significant differences between groups were found in the clinical evaluation at 6 and 18 months after treatment. ConclusionPapacarieTM is as effective as the traditional method for the removal of carious dentin on deciduous teeth, but offers the advantages of the preservation of sound dental tissue as well as the avoidance of sharp rotary instruments and local anesthesia.

Pain during Removal of Carious Lesions in Children: A Randomized Controlled Clinical Trial

The aim of the present study was to assess pain and the need for anesthesia during chemomechanical caries removal with Papacarie gel and the traditional method (low-speed bur) in pediatric patients. A randomized, controlled, clinical trial with a “split-mouth” design was carried out involving 20 children (10 girls and 10 boys) aged four to seven years. Forty primary teeth (two per child) were randomly allocated to either Group 1 (G1: chemomechanical caries removal with Papacarie gel) or Group 2 (G2: removal of carious dentin with low-speed bur). A face scale was used to classify the sensation of pain during the procedure (1: absence of pain; 2: mild pain; 3: moderate pain; 4: moderately intense pain; 5: intense pain; and 6: extremely intense pain). Statistical analysis of the data was performed using the Wilcoxon-Mann-Whitney (U) test. Pain scores were higher in G2, with statistically significant differences in comparison to G1 (U = 148.0; W = 358.0; P = 0.041). Chemomechanical caries removal with Papacarie provides a lesser degree of pain in comparison to conventional caries removal and does not require the use of local anesthesia. The clinical trial registration number is NCT01811420.

Assessment of chemomechanical removal of carious lesions using Papacarie Duo ™: Randomized longitudinal clinical trial

Chemomechanical removal of carious lesions consists of the dissolution of carious tissue by the application of a natural or synthetic agent, followed by atraumatic mechanical removal. The aim of the present study was to assess the effectiveness of Papacarie Duo ® gel in the chemomechanical removal of carious lesions in primary teeth in comparison to the traditional method (low-speed bur). A randomized clinical trial was conducted with 20 children between 5 and 8 years of age. Two teeth were treated in each child (split-mouth design), with the randomization of two methods: Group 1 - chemomechanical caries removal with Papacarie Duo™; and Group 2 - removal of carious dentin tissue using a low-speed bur. Both methods involved restoration with glass ionomer cement and follow up. The following aspects were evaluated: time required for the procedure; pain (face evaluation scale); retention of the restorative material in the cavity; and the presence of secondary caries after 30 days. Chi-squared test, Student's t-test, and Wilcoxon test. No statistically significant differences between methods were found regarding time required for the procedure (P = 0.13), the occurrence of pain (P = 0.585), or restoration status at the 30-day clinical evaluation (P = 0.713). The findings of the present study demonstrate that the two methods achieve similar results. The advantages of minimally invasive treatment, such as chemomechanical caries removal with Papacarie Duo™, are its ease of use, patient comfort, and the fact that it causes less damage to dental tissue.

Evaluation of Compressive Strength for a Combination of Glass Ionomer Cement and Antibiotics

Aims and objectives: Since atraumatic restorative treatment (ART) involves removal of carious lesions with manual instruments, there are more chances of residual bacteria under the glass ionomer restoration which might lead to secondary caries. Hence improving the antibacterial effect of glass ionomer cement helps in achieving better success rate. This study aimed to evaluate the compressive strength of glass ionomer cement containing different antibiotics. Materials and methods: Conventional restorative glass ionomer cement (Fuji IX) was used as control group. The experimental groups used were as follows: group 1: (Ciprofloxacin 50 mg + Cefuroxime 50 mg + metrogyl 50 mg) + GIC 9850 mg. Group 2: (ciprofloxacin 100 mg + cefuroxime 100 mg + metrogyl 100 mg) + GIC 9700 mg. Group 3: cetrimide 100 mg + GIC 9900 mg. Group 4: cetrimide 200 mg + GIC 9800 mg. Cylindrical specimens of dimensions 6 mm of length and 5 mm in diameter were prepared. The specimens were subjected to compressive loading using Instron universal testing machine at a crosshead speed of 1 mm/minute. Results: The experimental groups showed lower compressive strength when compared to the control group. No significant difference was found between control group and group 1. The compressive strength of groups 2, 3 and 4 was significantly less when compared to control group and group 1.