Surface roughness and wear behavior of occlusal splint materials made of contemporary and high-performance polymers.

With the development of a digital technology of computer-assisted manufacturing (CAD/CAM) and new age materials, the use of new types of occlusal splint is to consider. The aim of the present study was to evaluate the surface roughness (Ra) and wear behavior of different CAD/CAM materials against enamel antagonist through a simulated chewing test. A total of 75 specimens made from ethylene vinyl acetate (EVA), polymethyl methacrylate (PMMA), polycarbonate (PC), polyetheretherketone (PEEK), and polyethyleneterephthalate (PETG) as a control were polished to evaluate the Ra before loading by optical profilometry and further analyzed by scanning electron microscopy (SEM).

In vitro study of effects of aging and processing conditions on colour change in maxillofacial silicone elastomers.

Background: The inherent colour change in maxillofacial silicone elastomers becomes perceptible 6-12 months after fabrication. Determining the factors that accelerate the degradation of the prosthesis can help the clinicians increase its life span. Therefore, the aim of the study was to investigate the effect of time passage, processing temperature, and molding-stone colour on the colour change of maxillofacial silicone elastomers after darkroom storage for 6000 h.

Effect of dentin pretreatment on shear bond strength of three resin-based luting cements.

Purpose: The aims of this study were; to compare the shear bond strength values of resin-based luting cements using etch-and-rinse, self-etching or self-adhesive techniques and to evaluate the effects of pretreatment with 0.2%, and 2% chlorhexidine (CHX) solutions on the bonding stability to dentin.

Materials And Methods: Ninety specimens were divided into 9 groups of equal sample size (0.

Comparing the precision of reproducibility of computer-aided occlusal design to conventional methods.

Purpose: Reconstruction of patients' dental occlusion should be performed to fulfill esthetic and functional demands. These applied restorations should be in harmony with the existing occlusion and should not have any negative effects on intraoral dynamics. The aim of this clinical study is to compare the accuracy of the occlusal design shaped by conventional Wax Up methods and computer-aided design (CAD) regarding their similarity to the natural tooth morphology.

Predictors of obturator functioning and satisfaction in Turkish patients using an obturator prosthesis after maxillectomy.

Objective: The aim of this study was to determine the sociodemographic, behavioral, and clinical factors affecting obturator function and satisfaction using the obturator functioning scale (OFS) in maxillectomy patients rehabilitated with obturator prostheses.

Study Design: The study sample consisted of 41 maxillectomy patients. The OFS was translated into Turkish and adapted for assessing obturator functioning and patient satisfaction among Turkish patients.

Management of pain in TMD patients: Bio-oxidative ozone therapy versus occlusal splints.

Objective: To compare the effects of bio-oxidative ozone application with occlusal splints in temporomandibular disorder (TMD) patients with pain.

Methods: Forty participants were selected after the diagnosis of TMD and randomly divided into two groups: ozone group (OG, n = 20) and occlusal splint group (OCSG, n = 20). Ozone was applied to patients three times per week, for a total of six sessions.

Effect of high-frequency bio-oxidative ozone therapy for masticatory muscle pain: a double-blind randomised clinical trial.

To evaluate the effect of bio-oxidative ozone application at the points of greatest pain in patients with chronic masticatory muscle pain. A total number of 40 (40 women, with a mean age of 31·7) were selected after the diagnosis of myofacial pain dysfunction syndrome according to the Research Diagnostic Criteria for temporomandibular disorder (RDC/TMD). The patients were randomly divided into two groups: patients received the ozone therapy at the point of greatest pain, ozone group (OG; n = 20); patients received the sham ozone therapy at the point of greatest pain, placebo group (PG; n = 20).

Oral Rehabilitation of an Osteopetrosis Patient with Osteomyelitis.

Osteopetrosis is a congenital disorder characterized by increasing osteoclastic function resulting in osteomyelitis in the jaws. Orofacial findings in osteopetrosis patients are unerupted, malformed, or delayed teeth and many dental caries due to vulnerable enamel and dentin and osteomyelitis. Many reports have described that maxilla is an uncommon site of occurrence for osteomyelitis due to cortical bone morphology and collateral circulation.

Influence of acrylic resin polymerization methods on residual monomer release.

Aim: The aim of this study was to quantify and compare the amount of methyl methacrylate (MMA) monomer released from three different denture base acrylic material processed by different polymerization methods and storage conditions.

Materials And Methods: Microwave-cured, conventional heat and injection-technique acrylic polymerized materials were stored in neutral (pH = 7) and acidic (pH = 4.5) artificial saliva for 24 hours at the room temperature, separately.

Protective effects of caffeic acid phenethyl ester on dose-dependent intoxication of rats with paraquat.

Purpose: Paraquat (PQ; 1,1'dimethyl-bipyridilium 4,4'-dichloride), which is used extensively throughout the world, is highly toxic to humans. We aimed to investigate the protective effects of different doses of caffeic acid phenethyl ester (CAPE) on PQ-intoxicated rats.

Materials And Methods: A total of 80 rats were divided into the following eight groups, comprising 10 rats in each group: group 1: control; group 2: administered with CAPE (10 µmol/kg); group 3: administered with 15 mg/kg PQ (PQ15 group); group 4: administered with 30 mg/kg PQ (PQ30 group); group 5: administered with 45 mg/kg PQ (PQ45 group); group 6: administered with 15 mg/kg PQ + CAPE; group 7: administered with 30 mg/kg PQ + CAPE and group 8: administered with 45 mg/kg PQ + CAPE.

Assessment of the effect of two occlusal concepts for implant-supported fixed prostheses by finite element analysis in patients with bruxism.

The aim of this study was to evaluate the effects of bruxing forces on implants configured under 2 different occlusal schemes by dynamic finite element analysis. A main model consisting of a 5-unit fixed partial denture supported by 3 implants was simulated with bone, implants, and superstructures. All calculations were made individually for each component, namely porcelain crowns, abutments, abutment screws, implants, and bone.

Clinical evaluation of small diameter straumann implants in partially edentulous patients: a 5-year retrospective study.

Objective: The aim of the present study was to retrospectively evaluate small-diameter (3.3 mm) Straumann® dental implants placed in the maxilla or the mandible over a period of 5 years in function.

Materials And Methods: Twenty-eight partially edentulous patients received a total of 48 implants over a 5-year period.

Applicability of zirconia dental prostheses for metal allergy patients.

The aim of this study was to investigate the applicability of zirconium dioxide (zirconia) as a substitute for metal alloys in a group of metal allergy patients. Fourteen patients (eight women, six men) who had been restored with porcelain-fused-to-metal fixed partial dentures (FPDs) and had exhibited hypersensitivity lesions to dental alloys were enrolled in this study. Patients were previously patch-tested using standard testing substances authorized by the International Contact Dermatitis Research Group.

Prevalence of bruxism awareness in Istanbul, Turkey.

The reported prevalence of symptoms related to bruxism varies in the general population because of different investigative methodologies, operational definitions, clinical criteria, and samples of population. Awareness of bruxism in the general population is 15% to 23%, however, this rate increases to 50% to 90% in clinical studies. The aim of this study was to investigate the prevalence of self-reported symptoms associated with bruxism in Istanbul, Turkey and to analyze the correlation between bruxism and factors such as age, gender, marital status, and occupation.

Survival and Success of ITI Implants and Prostheses: Retrospective Study of Cases with 5-Year Follow-Up.

Objectives: The use of osseointegrated implants as an endoestal anchorage device to provide support for dental prostheses is a reliable and widely accepted treatment modality. The purpose of this study was to evaluate the clinical performance of non-submerged implants placed in the maxilla or in the mandible.

Methods: A total of 146 International Team for Implantology (ITI) (Straumann AG, Waldenburg, Switzerland) implants were placed in 42 patients (20 women, 22 men, mean age 42).

Patient responses to vacuum formed splints compared to heat cured acrylic splints: pilot study.

Objective: Vacuum formed and heat cured acrylic splints have been used in the diagnosis and treatment of temporomandibular disorders. The aim of this study was to evaluate patient's preference to either the vacuum formed or the heat cured acrylic splint.

Material And Methods: Twenty patients planned to receive splints were chosen from the dental school.

Estrogen replacement therapy among postmenopausal women and its effects on signs and symptoms of temporomandibular disorders.

The prevalence of temporomandibular disorders (TMD) is about two to five times higher in females than in males. Data for the higher prevalence of TMD in women and prevalence rates peak during the reproductive years and decrease after menopause. This indicated that female sex hormones may play a role in the etiology or maintenance of TMD.

Comparative study of the effect of tube drainage versus methylprednisolone after third molar surgery.

Objective: The purpose of this study was to compare the effects of tube drainage versus a single dose of methylprednisolone (MP) on maximal mouth opening, facial swelling, and pain after third molar surgery.

Study Design: Twenty-two patients requiring extraction of bilaterally impacted mandibular third molars were selected. Each patient had 2 operations.

Prevalence of symptoms associated with temporomandibular disorders in a Turkish population.

Despite numerous studies having been published, the epidemiology of temporomandibular disorders remains uncertain and controversial. The aim of this study was to estimate the prevalence and distribution of symptoms commonly associated with such disorders among a sample of adults in Istanbul, Turkey. A total of 1253 individuals aged 18 years were identified by using a random-digit dialing technique.

Use of biofunctional prosthetic system following partial maxillary resection: a clinical report.

This clinical report describes the prosthodontic rehabilitation of an edentulous patient with a maxillary defect using the biofunctional prosthetic system. The Biofunctional Prosthetic System brand denture includes a comprehensive technique for impressions, record taking, tooth placement, fabrication and processing. The advantage of this technique is to provide patients with optimal form, function, and aesthetics in complete dentures.

Improved edge strength in a facial prosthesis by incorporation of tulle: a clinical report.

This clinical report describes the use of tulle for increasing the tear resistance of a facial prosthesis. By incorporating tulle, a prosthesis' margins may be more stable, more resistant to tearing, and less likely to deform while adhesive, cosmetics, and cleaning agents are applied and removed.

The relation of bruxism and dermatoglyphics.

With the aim to examine the dermatoglyphic patterns of finger and palm, 38 bruxism patients, 18 being female were studied. Fingerprint patterns in bruxism has previously been discussed in a few papers, but this is the first paper about dermatoglyphic patterns of palm in bruxism. The aim of this study of finger and palm prints in patients with bruxism were to discuss the importance of dermatoglyphic patterns in the diagnosis and etiology of the disease.