Use of Nanocomposite Resin Materials for Dental Restoration in Elderly Patients

2021 ◽  
Vol 7 (5) ◽  
pp. 3916-3926
Author(s):  
Mengdong Liu ◽  
Haiping Xu ◽  
Yina Wang
Keyword(s):  
Elderly Patients ◽  
Adverse Reactions ◽  
Composite Resin ◽  
Dental Restoration ◽  
Whole Body ◽  
Good Time ◽  
Material Strength ◽  
Filling Material ◽  
Filling Materials ◽  
Restoration Effect

Tooth defects can affect not only periodontal tissue but also the whole body if not restored in good time. Composite resin materials are commonly used filling materials in dental restorations, but they have low material strength and are likely to cause insufficient secondary caries. Improving the ability of composite resin materials to restore defective teeth has thus become the focus of research interest. Nanocomposite materials are widely used in dentistry because of their good design characteristics, wide indications, strong restorative power, and high economic efficiency. However, whether they cause respiratory tract inflammation or tissue damage due to their large specific surface area still needs further investigation. This study compared the effects of nanocomposite resin materials with those of traditional light-curable composite resin materials on the restoration of dental defects in elderly patients and found that nanomaterials could not only reduce the incidence of tooth sensitivity and tooth pain after restoration but also improve the aesthetic outcomes of the tooth. In addition to the restoration effect, the occurrence of adverse reactions in patients who underwent dental restoration using nanomaterials within 2 years after the procedure was significantly lower than that in patients who underwent dental restoration using traditional materials. These results indicate that the nanocomposite resin material improved the restoration effect in elderly patients without increasing their risk for adverse reactions. Therefore, nanocomposite resin materials should be used as the preferred filling material for dental restoration in elderly patients with dental defects.

scholarly journals Comparative assessment of composites landing adaptation for dental restoration in experiments

2020 ◽  
Vol 24 (5) ◽  
pp. 286-292
Author(s):  
A. A. Gushchin ◽  
A. A. Adamchik
Keyword(s):  
Classical Method ◽  
Adhesive Bond ◽  
Pathological Process ◽  
Dental Restoration ◽  
Bacterial Invasion ◽  
Filling Material ◽  
Adhesive Properties ◽  
Tooth Formation ◽  
Filling Materials ◽  
Positive Effect

Background. In modern dental practice, there is a problem of complications after treatment of caries, such as the postoperative sensitivity of the tooth, formation of secondary caries, and caries complications in the form of pulpitis or periodontitis of the tooth. In addition, this problem exists despite the achievements in the production of high-quality composite filling materials, which are very popular among dentists worldwide. One of the problems that lead to complications after caries treatment is a violation of the integrity of the adhesive bond between the composite and the tooth tissue, which is manifested by a violation of the seal of restoration and the formation of a gap between the filling material and the tooth tissues. This in turn leads to the development of tooth sensitivity and the possibility of bacterial invasion between the filling material and the walls of the tooth, followed by the progression of the pathological process. In the scientific literature, there is evidence of the positive effect of preheating and vibration on the composite before its polymerization. Aim. Additionally, the purpose of this study is to determine the effect of physical impact, such as heating and vibration, on the composite using ultrasound in order to improve the quality of the adhesive fixation of the composite filling material to the walls of the tooth. Materials and methods. The study was conducted on the extracted teeth of patients. Based on this, we have proposed a method for the simultaneous thermo-vibration action on a non-polymerized composite directly in the formed tooth cavity to improve the physicochemical, including the adhesive, properties of light-curing composites. Results of the study revealed a statistically significant positive effect of thermo-vibration on the composite, not only in comparison with the classical method of working with the composite at room temperature, but also with the method of preheating the composite in a furnace used for heating the composite.

scholarly journals A Combined Amalgam-Composite Filling Technique to Resist Cuspal Fracture

2019 ◽  
pp. 47-50
Author(s):  
Samir Koheil
Keyword(s):  
Fracture Resistance ◽  
Composite Resin ◽  
Butt Joint ◽  
Group Iv ◽  
Filling Material ◽  
Tooth Structure ◽  
Group Iii ◽  
The Third ◽  
Filling Materials ◽  
Group I

This study was carried out to study a restorative technique of 2 mm thickness of composite resin filling material that bonded, by adhesive (4-META), to MOD cavities (Mesial, Occlusal and Distal surfaces of a tooth) partially filled with amalgam filling materials in upper premolars on the fracture resistance when compared to a sound tooth. Forty freshly sound extracted upper premolars were divided into four groups: the first group of ten sound premolars is subjected to fracture resistance test, the second group of ten premolars with a MOD of half intercuspal distance cavities, which was prepared with long bevel at the cavosurface angle and the teeth were filled with composite resin following incremental technique. The third group of ten teeth were prepared with a box form and butt joint of the same MOD cavities dimension and filled with non-gamma II amalgam. The fourth group of ten premolars with the same MOD cavities dimension are filled with amalgam, a 2 mm thickness of amalgam was removed of the occlusal surface after 24 hours, extended proximally mesially and distally, etch of the exposed enamel, dentin and amalgam was performed, and 4-META adhesive was applied to amalgam and exposed dentin and enamel followed by posterior composite bonded to tooth and amalgam, and cured with light for 40 seconds. The teeth of all groups were tested for fracture resistance. The group I showed the highest resistance to fracture followed by group IV followed by group II and lastly, group III. This study concluded that the use of combined bonded amalgam-composite and tooth structure provided the best technique for filling than cavity only filled with composite or amalgam.

Efficacy of an Oxycodone-Propofol Combination versus a Fentanyl-Propofol Combination in Conscious Sedation during Therapeutic Endoscopic Retrograde Cholangiopancreatography in Elderly Patients

Gerontology ◽  
2020 ◽  
pp. 1-8
Author(s):  
Peipei Guo ◽  
Huisheng Wu ◽  
Lan Liu ◽  
Qiu Zhao ◽  
Zhao Jin
Keyword(s):  
Adverse Events ◽  
Elderly Patients ◽  
Endoscopic Retrograde Cholangiopancreatography ◽  
Postoperative Nausea ◽  
Recovery Time ◽  
Adverse Reactions ◽  
Conscious Sedation ◽  
Endoscopic Retrograde ◽  
Patients Satisfaction ◽  
Low Incidence

<b><i>Background:</i></b> With a rapidly aging population, the need for endoscopic retrograde cholangiopancreatography (ERCP) is increasing. The commonly used sedation anesthesia in ERCP is a combination of propofol and fentanyl, even though fentanyl may cause some adverse reactions such as respiratory depression. <b><i>Objectives:</i></b> This study aimed to evaluate the efficacy of oxycodone combined with propofol versus fentanyl combined with propofol for sedation anesthesia during ERCP. <b><i>Methods:</i></b> A total of 193 patients aged from 65 to 80 years undergoing ERCP were enrolled and randomized into two groups: an “oxycodone combined with propofol” group (group OP, <i>n</i> = 97) and a “fentanyl combined with propofol” group (group FP, <i>n</i> = 96). The rate of perioperative adverse events as well as the recovery time, patients’ satisfaction, and endoscopists’ satisfaction were noted. <b><i>Results:</i></b> There was no difference in the frequency of hypotension or bradycardia between the two groups, but there were more episodes of desaturation (SpO<sub>2</sub> &#x3c;90% for &#x3e;10 s in 8.3%), postoperative nausea (7.3%), and vomiting (5.2%) in group FP than in group OP. Patients’ satisfaction in group FP was lower than that in group OP. The recovery time was longer in group FP than in group OP. <b><i>Conclusions:</i></b> Oxycodone combined with propofol was effective in ERCP, with a low incidence of perioperative adverse events.

Tissue Reaction to Subcutaneous Implantation of SuperEBA (Reinforced Zinc Oxide Cement) Used as Root-End Filling Material: A Histological Study in Rats

2016 ◽  
Vol 695 ◽  
pp. 247-251
Author(s):  
Alexandru Andrei Iliescu ◽  
Cristian Marian Petcu ◽  
Ileana Cristiana Petcu ◽  
Irina Maria Gheorghiu ◽  
Andrei Iliescu ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Histological Study ◽  
Tissue Reaction ◽  
Tissue Response ◽  
Successful Outcome ◽  
Filling Material ◽  
Clinical Value ◽  
Filling Materials ◽  
Retrograde Filling ◽  
Specific Tissue

The retrograde filling is a critical step to a successful outcome of the endodontic surgery. Despite the progress in the technology of novel root-end filling materials, zinc oxide-eugenol cement superEBA is still preserving its clinical value on long-term basis. The study aimed to reconsider the tissue response to the initial irritating effect of this material. Silicon tubes filled with superEBA were subcutaneously implanted for 120 days in white Wistar rats which were afterwards sacrificed. The connective tissue surrounding the superEBA implants revealed fibroblast proliferation and a definite reparatory process without inflammatory reaction. A non-specific tissue healing in progress around the implants, without calcifications, necrosis, and apoptosis was also described after 4 months. SuperEBA proved on animal model that its cytotoxicity is reducing gradually in time until no adverse reaction is observed. The reduced content in eugenol compared to other surgical zinc oxide cements and the benefic effect of o-ethoxybenzoic acid are the support to reconsider SuperEBA as a biocompatible retrograde filling material.

scholarly journals Investigation of the Sedimentation Property of Backfill Material on the Basis of Rheological Test: A Case Study of Iron Tailings

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Yong Wang ◽  
Aixiang Wu ◽  
Lianfu Zhang ◽  
Hongjiang Wang ◽  
Fei Jin
Keyword(s):  
Shear Stress ◽  
Shear Rate ◽  
Mass Concentration ◽  
Filling Material ◽  
Quantitative Characterization ◽  
Filling Materials ◽  
Characterization Studies ◽  
Rheological Test ◽  
Sedimentation Property

Sedimentation of filling materials could cause pipe blocking accident in mines. However, few quantitative characterization studies have investigated the sedimentation characteristics of filling materials. In this study, the sedimentation property of iron tailings with a cement-sand ratio of 1 : 4 and mass concentration of 73%∼82% was investigated based on rheology measurements. Results showed that shear stress increased as shear rate rose from 0 s−1to 120 s−1. The shear stress increased as the filling material concentration increased as well. However, when the shear rate was reversed from 120 s−1to 0 s−1, the shear stress presented an increase-constant-decrease change pattern as the mass concentration increases in the rheological curve. Accordingly, the sedimentation performance of iron tailings filling material was divided into three types: intense sedimentation (the ascending rheological curve) in the mass concentration range of 73%∼76%, slight sedimentation (the constant rheological curve) in the mass concentration range of 77%∼79%, and almost no sedimentation (the descending rheological curve) in the mass concentration range of 80%∼82%. The associated mechanism involving slurry mass concentration-rheological curves-sedimentation performance was illustrated. A correlation between the pipeline rheology and filling material sedimentation performance was established, which provides a practical guide to avoid pipeline blocking while transporting the filling material.

scholarly journals Influence of Crack Geometry on Dynamic Damage of Cracked Rock: Crack Number and Filling Material

2020 ◽  
Vol 11 (1) ◽  
pp. 250
Author(s):  
Feili Wang ◽  
Shuhong Wang ◽  
Zhanguo Xiu
Keyword(s):  
Energy Absorption ◽  
Split Hopkinson Pressure Bar ◽  
Mineral Exploration ◽  
Damage Variable ◽  
Filling Material ◽  
Hopkinson Pressure Bar ◽  
Filling Materials ◽  
The Stability ◽  
Pressure Bar ◽  
Dynamic Damage

The dynamic damage of cracked rock threatens the stability of rock structures in rock engineering applications such as underground excavation, mineral exploration and rock slopes. In this study, the dynamic damage of cracked rock with different spatial geometry was investigated in an experimental method. Approximately 54 sandstone specimens with different numbers of joints and different filling materials were tested using the split Hopkinson pressure bar (SHPB) apparatus. The energy absorption in this process was analyzed, and the damage variable was obtained. The experimental results revealed that the dynamic damage of cracked rock is obviously influenced by the number of cracks; the larger the number, the higher the energy absorption and the bigger the dynamic damage variable. Moreover, it was observed from the dynamic compressive experiments that the energy absorption and the dynamic variable decreased with the strength and cohesion of the filling material, indicating that the filling material of crack has considerate influence on the dynamic damage of cracked rock.

Immunogenicity and adverse reactions of influenza vaccination in elderly patients given acetaminophen or placebo

1993 ◽  
Vol 1 (2) ◽  
pp. 129-136 ◽  
Author(s):  
M. Chernesky ◽  
D. O'Neill ◽  
L. Pickard ◽  
S. Castriciano ◽  
D. Kraftcheck ◽  
...  
Keyword(s):  
Elderly Patients ◽  
Influenza Vaccination ◽  
Adverse Reactions

scholarly journals Safety and Effectiveness of Additional Apical Preparation using a Rotary Heat-treated Nickel–Titanium file with Larger Diameter and Minimum Taper in Retreatment of Curved Root Canals

2021 ◽  
Author(s):  
Jader Camilo Pinto ◽  
Fernanda Ferrari Esteves Torres ◽  
Airton Oliveira Santos-Junior ◽  
Marco Antonio Hungaro Duarte ◽  
Juliane Maria Guerreiro-Tanomaru ◽  
...  
Keyword(s):  
Fatigue Resistance ◽  
Continuous Wave ◽  
Cyclic Fatigue ◽  
Nickel Titanium ◽  
Filling Material ◽  
Root Canals ◽  
Filling Materials ◽  
Heat Treated ◽  
Before And After ◽  
Curved Root Canals

Abstract Objective The aim of this study was to investigate the effect of additional apical preparation using the ProDesign Logic (PDL) 50/.01 rotary heat-treated nickel–titanium (NiTi) file with a larger diameter and minimal taper for retreatment of curved root canals. Materials and Methods Mesial curved root canals of 12 mandibular molars were prepared using PDL 25/.06 and filled using the continuous wave of condensation technique and AH Plus sealer. After retreatment using ProDesign S (PDS) 25/.08, PDL 25/.06 and PDL 35/05, a complementary procedure was performed with PDL 50/.01. Microcomputed tomography (micro-CT) scanning was performed before and after retreatment procedures. The cyclic fatigue resistance of unused PDS 25/.08, PDL 25/.06, PDL 35/.05 and PDL 50/.01 instruments (n = 12) was evaluated in a stainless-steel device. Statistical Analysis Data on the volumes of the root canals and the remaining filling materials were submitted to the paired t-test. Cyclic fatigue resistance data was submitted to one-way ANOVA and Tukey’s tests (α = 0.05). Results Use of PDL 50/.01 decreased the remaining filling materials in the apical third (p < 0.05). The root canal volume was similar in the cervical and middle thirds before and after preparation using PDL 50/.01 (p > 0.05). PDL 50/.01 presented the highest cyclic fatigue resistance (p < 0.05). Conclusions Use of the PDL 50/.01 instrument as an additional apical preparation for retreatment of curved root canals improved filling material removal in the apical third, while maintaining the dentin in the cervical and middle thirds. In addition, PDL 50/.01 presented high-flexural resistance.

scholarly journals The association between whole body sagittal balance and risk of falls among elderly patients seeking treatment for back pain

2017 ◽  
Vol 6 (5) ◽  
pp. 337-344 ◽  
Author(s):  
J. Kim ◽  
J. Y. Hwang ◽  
J. K. Oh ◽  
M. S. Park ◽  
S. W. Kim ◽  
...  
Keyword(s):  
Back Pain ◽  
Elderly Patients ◽  
Sagittal Balance ◽  
Whole Body ◽  
Risk Of Falls

scholarly journals Evaluation of Pre-heating Effects on Marginal Adaptation of Resin-based Materials

2018 ◽  
Vol 55 (2) ◽  
pp. 238-242 ◽  
Author(s):  
Ionut Taraboanta ◽  
Simona Stoleriu ◽  
Gianina Iovan ◽  
Antonia Moldovanu ◽  
Andrei Georgescu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Composite Resin ◽  
Optical Microscope ◽  
Marginal Adaptation ◽  
Gap Formation ◽  
Solution Ph ◽  
Filling Materials ◽  
Heating Effects ◽  
Direct Restoration ◽  
Materials Used

The aim of the study was to compare the marginal adaptation of three different resin-based materials used for direct restoration: hybrid composite resin (Gaenial Posterio, GC Corporation), a compomer (Dyract eXtra, Dentsply Sirona), and a giomer (Beautifil II, Shofu Dental) applied at room temperature or after preheated at preheating 50 and 60oC. Class II cavities were prepared on proximal surfaces of extracted teeth and randomly divided in 3 groups according to the material used for restoration. In each group five cavities were restored using the materials at room temperature (subgroup 1), five cavities were restored using preheated materials at 50şC (subgroup 2), and five cavities were restored using preheated materials at 60şC (subgroup 3). The teeth were stored in distilled water for 14 days and then were immersed in 2% methylene blue buffered dye solution (pH = 7) for 4 hours. The teeth were transversally cut and the sections were examined using optical microscope (Carl-Zeiss AXIO Imager A1m) at 50x magnification and the dye penetration was evaluated according to 4 scores. Decreased microleakage and fewer gap formation were recorded for all filling materials after they have been heated at 50 or 60oC. Pre-warming of resin-based materials improves the adaptation of these materials to tooth structures.

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