Correlation Between Microleakage And Screw Loosening At Implant-Abutment Connection

PURPOSE This study aimed to evaluate the correlation between microleakage and screw loosening at different types of implant-abutment connections and/or geometries measuring the torque values before and after the leakage tests. MATERIALS AND METHODS Three different abutment types (Intenal hex titanium, internal hex zirconium, morse tapered titaniuım) with different geometries were connected to its own implant fixture. All the abutments were tightened with a standard torque value then the composition was connected to the modified fluid filtration system. After the measurements of leakage removal torque values were re-measured. Kruskal-wallis test was performed for non-parametric and one-way ANOVA was performed for parametric data. The correlation was evaluated using Spearman Correlation Test (α=0.05). RESULTS Significantly higher microleakage was found at the connection of implant-internal hex zirconium abutment. Observed mean torque value loss was also significantly higher than other connection geometries. Spearman tests revealed a significant correlation between microleakage and screw loosening. CONCLUSION Microleakage may provoke screw loosening. Removing torque values rationally decrease with the increase of microleakage.PubMedWoSScopu

Evaluation Of Low-Level Laser Therapy In Tmd Patients

Light amplification by stimulated emission of radiation (laser) is one of the most recent treatment modalities in dentistry. Low-level laser therapy (LLLT) is suggested to have biostimulating and analgesic effects through direct irradiation without causing thermal response. There are few studies that have investigated the efficacy of laser therapy in temporomandibular disorders (TMD), especially in reduced mouth opening. The case report here evaluates performance of LLLT with a diode laser for temporomandibular clicking and postoperative findings were evaluated in two cases of TMD patients. First patient had a history of limited mouth opening and pain in temporomandibular joint (TMJ) region since nine months. Second patient's main complaint was his restricted mouth opening, which was progressed in one year. LLLT was performed with a 685 nm red probed diode laser that has an energy density of 6.2 J/cm2, three times a week for one month, and application time was 30 seconds (685 nm, 25 mW, 30 s, 0.02 Hz, and 6.2 J/cm2) (BTL-2000, Portative Laser Therapy Device). The treatment protocol was decided according to the literature. One year later patients were evaluated and there were no changes. This application suggested that LLLT is an appropriate treatment for TMD related pain and limited mouth opening and should be considered as an alternative to other methods.PubMedScopu

What Is The Changing Frequency Of Diamond Burs?

PURPOSE The purpose of this study was to determine the changing frequency of a diamond bur after multiple usages on 3 different surfaces. MATERIALS AND METHODS Human premolar teeth (N = 26), disc shaped direct metal laser sintered CoCr (N = 3) and zirconia specimens (N = 3) were used in this study. Groups named basically as Group T for teeth, Group M for CoCr, and Group Z for zirconia. Round tapered black-band diamond bur was used. The specimens were randomly divided into three groups and placed with a special assembly onto the surveyor. 1, 5, and 10 preparation protocols were performed to the first, second, and third sub-groups, respectively. The subgroups were named according to preparation numbers (1, 5, 10). The mentioned bur of each group was then used at another horizontal preparation on a new tooth sample. The same procedure was used for CoCr and zirconia disc specimens. All of the bur surfaces were evaluated using roughness analysis. Then, horizontal tooth preparation surfaces were examined under both stereomicroscope and SEM. The depth maps of tooth surfaces were also obtained from digital stereomicroscopic images. The results were statistically analyzed using One-Way ANOVA, and the Tukey HSD post-hoc tests (α=.05). RESULTS All of the groups were significantly different from the control group (P<.001). There was no significant difference between groups Z5 and Z10 (P=.928). Significant differences were found among groups T5, M5, and Z5 (P<.001). CONCLUSION Diamond burs wear after multiple use and they should be changed after 5 teeth preparations at most. A diamond bur should not be used for teeth preparation after try-in procedures of metal or zirconia substructures.PubMedWoSScopu

Combined Treatment with Laser Sintering and Zirconium: A Case Report of Dentinogenesis Imperfecta

Osteogenesis imperfecta (OI) is a heterogeneous disorder of connective tissue that manifests mainly as skeletal deformity and bone fragility. Dentinogenesis imperfecta (DI) is sometimes an accompanying symptom of OI. The treatment protocol of these patients varies according to the clinical appearance. The case report here describes complete mouth rehabilitation of an 18-year-old male patient with OI and DI using direct metal laser sintering (DMLS) technique of metal-ceramic restorations and zirconium all-ceramic crowns. DMLS is an additive metal fabrication technology that is simpler, more precise, and healthier than conventional manufacturing and can be remarkably cost effective. Moreover, the technique affords highly accurate production of fixed partial dentures with ideal marginal fit and excellent mechanical properties. The patient was treated using a multidisciplinary strategy that focused on controlling caries, protecting teeth from further wear, obtaining an appropriate vertical dimension, and providing soft tissue support to return the facial profile to a normal appearance using new technology in the field of prosthetics

Urolithiasis and smoking

Background: Urolithiasis and smoking are common pathologies in society. We tried to understand whether or not there is a significant relationship in between

Alanine aminotransferase indicates excess weigh and dyslipidemia

Background: There may be some hepatic indicators of metabolic syndrome. We tried to understand whether or not there is an association between alanine aminotransferase (ALT) value and excess weight

Irritable bowel syndrome and smoking

Background: We tried to understand whether or not there is a significant relationship between irritable bowel syndrome (IBS) and smoking.& para;& para;Method: IBS is diagnosed according to Rome II criteria in the absence of red flag symptoms.& para;& para;Results: One hundred and four patients with IBS and 104 controls were studied. Interestingly, 78.8% (82 patients) of IBS patients were female with a mean age of 51.2 +/- 9.9 (29-70) years. Prevalence of smoking was significantly higher in cases with IBS (29.8% versus 11.5%, p<0.001). Similarly, prevalences of hyperbetalipoproteinemia, hypertriglyceridemia, and dyslipidemia were higher in cases with IBS but the difference was significant just for hypertriglyceridemia (26.9% versus 16.3%, p<0.01) probably due to the small sample size of the study. On the other hand, mean body mass index (BMI) and prevalences of hypertension (HT) and diabetes mellitus (DM) were all lower in cases with IBS but the difference was significant just for HT (10.5% versus 26.9%, p<0.001) probably due to the small sample size of the study, again.& para;& para;Conclusion: Although IBS may have a complex mechanism with a higher prevalence in females, smoking may be one of the several causes of IBS by causing avascular endothelial inflammation all over the body. The disseminated inflammation may be the cause of lower BMI and associated lower prevalences of HT and DM in the IBS cases. On the other hand, higher prevalences of hyperbetalipoproteinemia, hypertriglyceridemia, and dyslipidemia in cases with IBS may actually indicate their roles as acute phase reactants in smokers in the body