Majalah Kedokteran Gigi Indonesia
Not a member yet
499 research outputs found
Sort by
The effect of sodium ascorbate application and intracoronal bleaching on the shear bond strength of composite resin
No full textAn increase in the frequency of 35% hydrogen peroxide (HP) application during intracoronal bleaching leads to a higher accumulation of free radical residues, which can negatively affect the bonding of composite resin. The removal of these free radicals can be facilitated by the application of 35% sodium ascorbate (SA) combined with 0.4% surfactant. An additional frequency of SA application is required to counteract the increased free radical residues. This study aimed to evaluate the effect of the frequency of 35% SA combined with 0.4% surfactant and different intracoronal bleaching frequencies on the shear bond strength of composite resin. Forty-eight premolar teeth were divided into two main groups of 24 specimens each. Group I received two applications of 0.01 mL HP 35%, while Group II received three applications. After each bleaching session, the specimens were stored in a closed tube for five days per session, then washed and dried. Each group was further divided into three subgroups. Subgroup A was left untreated for seven days; Subgroup B received two applications of 35% sodium ascorbate combined with 0.4% surfactant; and Subgroup C received three applications. All specimens were restored with composite resin and immersed in pH 7 artificial saliva in an incubator for seven days. Shear bond strength was tested using a Universal Testing Machine at a crosshead speed of 0.5 mm/min. Two-way ANOVA revealed a significant effect of sodium ascorbate application frequency and different intracoronal bleaching frequencies on composite resin shear bond strength (p < 0.01). The results indicate that the shear bond strength of composite resin subjected to three applications of 35% sodium ascorbate combined with 0.4% surfactant is statistically comparable to those obtained with two applications of the same formulation
Effect of immersion in effervescent granules of watermelon rind (Citrullus lanatus) extract on the surface roughness of artificial teeth
No full textArtificial teeth elements are essential components of removable dentures. Inadequate cleaning can lead to the accumulation of microorganisms, which may cause denture stomatitis. Alkaline peroxide effervescent tablets are commonly used denture cleansers. However, prolonged use may increase the surface roughness of artificial teeth. To address this, an alternative natural-based cleanser has been formulated using red watermelon (Citrullus lanatus) rind extract in effervescent granule form. Effervescent granules of watermelon rind extract have potential as an alternative denture cleanser due to their antibacterial properties. The effervescent reaction helps mechanically remove plaque and debris while inhibiting the growth of microorganisms that cause odor and infection. This formulation is practical, natural, and economical. The study aims to evaluate the effect of immersion in effervescent granules containing watermelon rind extract on the surface roughness of artificial teeth. This was a laboratory experimental study using acrylic resin-based artificial teeth. Samples were divided into three treatment groups: aquadest, alkaline peroxide effervescent solution, and watermelon rind effervescent granule solution (n = 5). Surface roughness was measured using a Surface Roughness Tester, and data were analyzed with the Kruskal–Wallis test (p < 0.05). The mean surface roughness values after immersion in aquadest, alkaline peroxide solution, and watermelon rind effervescent granules were 0.140 ± 0.026 µm, 0.616 ± 0.213 µm, and 0.670 ± 0.041 µm, respectively. The findings demonstrate that immersion in effervescent granules containing watermelon rind extract significantly increases the surface roughness of artificial teeth. Further formulation development is recommended to optimize its potential as a natural denture cleanser
Fiber reinforced direct composite for endodontic treated tooth in one year follow-up
No full textAfter root canal treatment, tooth will be more fragile due to loss of tooth structure integrity as a result of the caries process, access preparation, reduced water, and or tooth fracture. This is the main consideration for determining the material and restoration technique for endodontic treated tooth (ETT). Fiber reinforcement direct composite can maintain the remaining tooth structure and increase fracture resistance. This case report aims to evaluate the 1-year follow-up of fiber reinforcement direct composite in molar tooth after root canal treatment. The first case was a 28-year-old man, who came to RSGM to maintain his left lower right molar which had been filled for about 10 years. On the radiograph, there was a radiopaque filling to the pulp and apical radiolucency. The results of clinical examination obtained previously initiated therapy, asymptomatic apical periodontitis. The second case, a 27-year-old woman, complained pain on biting in the lower left molar for a week. On the radiograph, there was a radiopaque filling at the occlusal side, a non-hermetic obturation material in the root canals, and apical radiolucency. From the clinical examination, previously treated, symptomatic apical periodontitis was obtained. One-visit endodontic treatment was given followed by a direct restoration with composite resin, short-fiber filler, and fiber ribbond. The endodontic treated tooth restored with fiber reinforcement direct composite obtained good results after 1 year follow-up
Primary tooth eruption in preterm low birth weight children
No full textPrimary teeth play a vital role as masticatory organs that support the digestive process in children. Preterm low birth weight (PTLBW) is a significant public health concern in many countries and may adversely affect children’s overall health. Understanding the patterns and timing of primary tooth eruption in PTLBW children is important, as it can provide valuable insights for clinical management, including the monitoring of dental development and the implementation of early interventions. This study presents a comprehensive scoping review of the literature on PTLBW and primary tooth eruption. The review followed the framework proposed by Arksey and O’Malley and was further refined using the Joanna Briggs Institute (JBI) methodology for scoping reviews. Literature searches were conducted in electronic databases, including Scopus and PubMed, covering publications from the past 10 years. Eight studies met the inclusion criteria and were analyzed in this review. The findings indicate that PTLBW children experience delayed eruption of primary teeth. Future prospective studies are needed to identify potential biomarkers or predictive indicators for delayed eruption, as well as to evaluate the effectiveness of early treatment interventions on dental development and oral health outcomes in this population
Chicken bone hydroxyapatite enhances collagen density and osteoblast cell number during bone formation of post-extraction socket wound healing process (an in vivo study)
No full textTooth extraction is a common dental procedure. Osteoblasts (bone-forming cells) and collagen are key indicators of wound healing following tooth extraction. Hydroxyapatite is a calcium-rich material that promotes the secretion of Fibroblast Growth Factor (FGF), Platelet-Derived Growth Factor (PDGF), and Transforming Growth Factor Beta (TGF-β)—all of which play critical roles in the wound healing process. Chicken bones, a natural source of hydroxyapatite, contain approximately 85% calcium phosphate minerals. This study aimed to determine the effect of chicken bone-derived hydroxyapatite on osteoblast cell count and collagen density in post-tooth extraction wounds in Wistar rats. Thirty male Wistar rats were randomly divided into treatment and control groups. Tooth extraction was performed on the lower left incisor of each rat. Hydroxyapatite was prepared by calcining chicken bones at 700 °C to remove organic material. The resulting hydroxyapatite powder was implanted into the tooth sockets of rats in the treatment group, while the control group received no implantation. Both groups were sutured and treated with povidone-iodine. Three rats from each group were sacrificed on days 3, 5, 7, 10, 14, and 21. Histological samples were prepared using hematoxylin-eosin and Mallory’s Trichrome staining. Osteoblast cells (100× magnification) and collagen density (400× magnification) were examined using a light microscope and Optilab Viewer, across five fields of view per sample. Two-way ANOVA showed significant differences in both osteoblast cell counts and collagen density between groups and across observation days (p < 0.05). Least Significant Difference (LSD) post hoc analysis also revealed significant differences between groups on all observation days (p < 0.05). In conclusion, chicken bone-derived hydroxyapatite significantly increases osteoblast numbers and collagen density during the post-extraction wound healing process in Wistar rats
Effect of light-curing techniques and preheated composite types as luting agents on lithium disilicate bond strength
No full texthe bond strength between lithium disilicate veneers and tooth structure depends on factors such as curing technique and luting agent. Preheated composite resins have been proposed as alternative luting agents due to their favorable mechanical and polymerization properties. This study aimed to evaluate the effects of conventional, ramp, and pulse light-curing techniques on the shear bond strength of lithium disilicate when preheated microhybrid and nanohybrid composite resins were used as luting agents. Forty-two maxillary premolars were prepared and randomly assigned to six groups (n = 7) based on the combination of luting agent and light-curing technique: IA (microhybrid–conventional), IB (microhybrid–ramp), IC (microhybrid–pulse), IIA (nanohybrid–conventional), IIB (nanohybrid–ramp), and IIC (nanohybrid–pulse). Lithium disilicate veneers were cemented accordingly, and shear bond strength was evaluated. Results from a two-way ANOVA indicated a significant effect of the type of preheated composite resin on the shear bond strength of lithium disilicate (p 0.05). This study confirmed that preheated microhybrid composite resin produces greater shear bond strength compared to preheated nanohybrid composite resin. Light-curing technique does not significantly affect the shearbond strength of lithium disilicate
Accuracy of digital image processing in radiographic early caries detection
No full textTooth surface with early caries lesion can remineralize into sound tooth surface with early intervention. However, early caries lesion is difficult to detect and frequently goes unnoticed during clinical or radiographic examinations. Image quality enhancement through imaging tools such as filters has the potential to increase the accuracy of early caries lesion detection. To compare the accuracy of original radiographic images to enhanced images with filters on digital dental x-ray for detection of early caries lesions. Five working models were utilized, containing 42 sound tooth surfaces, and 36 surfaces with early caries lesions. Radiographic images were takenusing Vistascan storage phosphor plate system (Dürr Dental, Germany) and enhanced with Fine, Caries 1, Caries 2, and High Diagnostic (HD) filters. Original and enhanced radiographic images were assessed by three observers to record the presence or absence of early caries lesions. Sensitivity, specificity, and overall accuracy were calculated. Sensitivity of HD and Fine filter images were significantly higher (p 0.05). There was no significant difference between the specificity of original filter images and filter enhanced images. The overall accuracy of original filter images and filter enhanced images increased significantly only on HD filter (p < 0.05). HD filter had significantly higher overall accuracy than the original images.In addition, it showed the highest sensitivity, specificity, and overall accuracy. Therefore, some filters may be used to enhance early caries lesion detection
Impact of immersion in papaya juice on color and surface roughness of nanohybrid composite resin
No full textNanohybrid composite resin is well-known because of its good aesthetic properties. It has high water sorption, allowing various coloring substances such as papaya juice to penetrate. Papaya juice enzymes may also cause a rougher composite resin surface. This study determined the effect of papaya juice on color and surface roughness of nanohybrid composite resin using laboratory experiment. This study used posttest with control group design containing 27 samples of nanohybrid composite resin (B & E Korea XS-FIL A3.5) with diameter of 10 mm and thickness of 2 mm. The samples were divided into 3 groups: immediate, control, and treatment group. The samples of immediate group were tested directly for color and surface roughness. The treatment group was immersed in papaya juice for 3 hours followed by 21 hours in distilled water, while the control group was immersed in distilled water for 24 hours. All samples were immersed in an incubator at 37 °C for 4 days. Changes in color and surface roughness were tested using a VITA Easyshade V spectrophotometer and a Taylor Hobson surface roughness tester, respectively. ANOVA and post hoc Tukey showed a significant (p < 0.05) change in color (p = 0.003) and surface roughness (p = 0.000); significant (p = 0.033) color change was obtained between the immediate group (E = 6.933) and the treatment group (E = 7.959). In terms of surface roughness, significant (p = 0.000) results were obtained between the treatment group (Ra = 1.974 μm) with the immediate group (Ra = 1.411 μm) and the control group (Ra = 1.404 μm). In conclusion, papaya juice causes changes in color and surface roughness of nanohybrid composite resin
Titanium oxide coating and acid etching on platelet activation in dental implants
No full textTitanium is the most widely used dental implant material, but it requires surface treatment to improve osseointegration. While coating implants with TiO2, residue can arise, which may lead to contamination. To address this, 10% HF etching is added. This study investigated the effect of TiO2 coating using sputtering and HF etching on platelet activation in titanium dental implants. Laboratory experiments were conducted on titanium implants (Ø = 4 mm; length = 12 mm) treated with TiO2 coating and 10% HF etching. Twenty-four samples were divided into four groups (n = 6): Group I (TiO2), Group II (TiO2 + HF 5 min), Group III (TiO2 + HF 10 min), and Group IV (TiO2 + HF 20 min). Platelet activation was assessed using CD41 and CD62P expression markers. Data analysis employed one-way ANOVA and post hoc LSD test (p = 0.05). Platelet activation ranged from 20.31 ± 1.78% to 35.90 ± 3.81%. One-way ANOVA revealed a significant effect (p < 0.05) of both TiO2 coating and acid etching on activation. LSD post hoc test showed significant differences (p < 0.05) between all groups except for the 10 and 20-minute etching periods. TiO2 coating with 10 minutes of HF etching resulted in the optimal activation level
Observation of new bone penetration into titanium rods with various thread pitch
No full textTitanium is a gold standard material in dental implant treatment due to its biocompatibility and excellent mechanical strength. However, titanium has no bioactivity and osteoconductivity. This has led to studies to develop the osteoconductivity by modifying the surface morphology, such as the thread pitch, which affect the implant stability and bone formation around the implant. This study aims to evaluate the effect of various size of gaps (equivalent to thread pitch) on the bone formation in titanium rods implantation. Initially, titanium rods were cut with different blade sizes: 0.2, 0.3, and 0.4 mm. The gaps were equivalent to dental implant thread pitch. Titanium rods were implanted in the rat’s femur and inserted into the bone marrow. After 2 and 4 weeks of implantation, the rats were euthanized and the implanted femur were extracted. The femurs were resin-embedded and cut into 1-mm thickness. The specimens were observed by backscattered SEM. Two weeks after implantation, new bone started to form and penetrated the pitch. In the wider gaps, the bone penetration was found to be particularly high, and vice versa. After 4 weeks, the new bone formation was greater compared to 2 weeks of implantation, and more bone penetration was observed in the wider pitch. This study is an observational research with qualitative reading of the backscattered SEM images. In conclusion, wider pitch could increase osseointegration by providing larger space for bone formation