Cost of Using Laser Powder Bed Fusion to Fabricate a Molten Salt-to-Supercritial Carbon Dioxide Heat Exchanger for Concentrating Solar Power.

Advances in manufacturing technologies and materials are crucial to the commercial deployment of energy technologies. We present the case of concentrating solar power (CSP) with molten salt (MS) thermal storage, where low-cost, high-efficiency heat exchangers (HXs) are needed to achieve cost competitiveness. The materials required to tolerate the extreme operating conditions in CSP systems make it difficult or infeasible to produce them using conventional manufacturing processes.

An Comparative Study to Assess Minimal Thickness Required for Monolithic Zirconia Crowns to Resist Fracture under Load on Rapid Prototyped Models.

Aim: To evaluate and validate minimal thickness required for computer-aided designed (CAD) and computer-aided manufactured (CAM) monolithic zirconia crowns to withstand occlusal load. The study compares two systems.

Materials And Methods: Forty-eight rapid prototype die models with varying occlusal reductions were fabricated.

Innovative cooling strategies: Dairy cow responses and water and energy use.

Producers in the western United States commonly use spray water at the feed bunk and fans in the lying area to mitigate heat stress in dairy cows. Often, spray water cycles on and off with fans turning on when a preset air temperature is reached. Although this method can be effective, innovative strategies are needed to reduce water and energy use.

Comparison of expectation and satisfaction among new and existing denture wearers and correlation of duration of previous denture-wearing experience to satisfaction in completely edentulous patients: A pilot study.

Aim: The aim of the study was to evaluate the patients' expectation and satisfaction with complete dentures before and after the treatment concerning retention, mastication, phonetics, esthetics, and comfort among the first-time denture wearers and already denture wearers and to find the correlation between duration of denture-wearing experience and satisfaction.

Settings And Design: Cross sectional survey .

Materials And Methods: A questionnaire was given to the patient before the onset of the treatment, and ratings were given by the patient for expectation regarding retention, mastication, phonetics, esthetics, and comfort.

Rhinocerebral Mucormycosis: A Prospective Analysis of an Effective Treatment Protocol.

Objective: The objective of this study was to prospectively analyze the effectiveness of a treatment protocol in patients diagnosed with rhinocerebral mucormycosis.

Materials And Methods: This series included ten patients who reported with suspicious clinical signs of mucormycosis. The diagnosis was established by histopathology, and computed tomography imaging was used to assess the extent of spread.

Split-mouth comparison of physics forceps and extraction forceps in orthodontic extraction of upper premolars.

We compared outcome variables (operative complications, inflammatory complications, and operating time) in patients being treated by orthodontic extraction of upper premolars with the Physics forceps or the universal extraction forceps. We organised a single blind, split-mouth clinical trial to compare the outcomes of the 2 groups (n=54 premolars). The Physics forceps group had lower mean (SD) visual analogue scores (VAS) for pain (0.

Prosthognathic rehabilitation of a patient with underlying skeletal discrepancy- a case report.

Vertical and anterioposterior maxillary excesses can be treated with a combination of orthopaedic functional appliances, orthodontics and surgery. Treatment varies according to the age, patient reports for treatment. In patients who are treated with either of the above mentioned treatment modalities, if they require prosthetic replacement on a later date, especially of anterior teeth, prosthetic treatment alone does not give an aesthetic outcome.

Effectiveness of tranexamic acid on intraoperative blood loss in isolated Le Fort I osteotomies--a prospective, triple blinded randomized clinical trial.

The aim of this triple blinded randomized clinical trial was to evaluate the efficacy of tranexamic acid when used in conjunction with hypotensive anaesthesia exclusively for Le Fort I osteotomies. 49 patients undergoing Le Fort I osteotomy for correction of dentofacial deformity were divided into two groups; Group 1 received a placebo of saline 5 ml and Group 2 received 10 mg/kg body weight of tranexamic acid. The operating surgeon, anaesthetist and investigator were blinded.

The use of buccal fat pad in the treatment of oral submucous fibrosis: a newer method.

Purpose of the study. This study was to evaluate the use of buccal fat pad as an interpositioning material in surgical management of oral sub mucous fibrosis. Materials and methods.

Osteo-odonto-keratoprosthesis - a maxillofacial perspective.

The OOKP (osteo-odonto-keratoprosthesis) is the treatment of choice for conditions like Stevens-Johnson syndrome, ocular cicatricial pemphigoid, trachoma, multiple failed grafts and chemical burns which are not amenable to penetrating keratoplasty. The OOKP is an autograft which replaces the cornea with a polymethacrylate cylinder mounted on a tooth-bone complex. The aim of this paper was to retrospectively analyze the records in 26 patients undergoing OOKP surgery between 2007 and 2011.

Management of post-operative maxillofacial oncology patients without the routine use of an intensive care unit.

Aim: To assess the safety and efficacy of immediate postoperative management of major maxillofacial oncology patients in a High Dependency Unit (HDU).

Patients And Methods: All operated maxillofacial oncology patients were included. Detailed records and clinical parameters were assessed for diagnosis, procedure, diagnosis, American Society of Anaesthiologists (ASA) grade, procedure, type of reconstruction, duration of surgery, post operative location, days of hospitalization risk factors and complications if any.

Subankylotic ostectomy for release of TMJ ankylosis using the transmasseteric anterior parotid approach.

Twelve patients with temporomandibular joint ankylosis (5 bilateral and 7 unilateral) with preoperative maximal mouth opening ranging from 0 to 11 mm (mean, 2.25 [SD, 3.19] mm) were treated with a subankylotic ostectomy.

Transmasseteric anterior parotid approach for condylar fractures: experience of 129 cases.

We have evaluated the transmasseteric anterior parotid (TMAP) approach in the treatment of 163 condylar fractures in 129 patients. Ninety-five patients presented with unilateral, and 34 with bilateral, fractures. The inclusion criteria were patient's choice for open reduction and internal fixation, displaced unilateral condylar fractures with occlusal derangement, and displaced bilateral condylar fractures with anterior open bite.

Intraosseous infantile myofibroma of the mandible.

The myofibroma, especially the intraosseous variety, is an uncommon benign tumor that occurs primarily in children younger than 3 years of age. Since 1966, less than 40 cases of solitary myofibromas of the mandible have been reported in the literature. Myofibroblasts and spindle cells are predominantly found in this benign lesion.

A case report of solitary, intraosseous, adult-onset myofibroma of the mandible.

Myofibroma is a benign proliferation of myofibroblasts in the connective tissue. Solitary intraosseous myofibromas are a rare finding especially in an adult. Myofibroma is a benign lesion and its treatment is similar to any other benign lesion.

Oxidative stability of gelatin coated pork at refrigerated storage.

As consumers are chiefly concerned with odor and appearance, refrigerated meats have a greater possibility of rejection due to their perishability. A treatment was designed to preserve the quality parameters such as color and oxidation rate. The treatment encompassed coating pork loin samples with aqueous porcine gelatin solutions (175 bloom) at three concentrations (0%, 10% and 20%) and studying its effect on lipid oxidation, protein oxidation, oxidation pre-cursors, color and purge of meat.

Open versus closed treatment of unilateral subcondylar and condylar neck fractures: a prospective, randomized clinical study.

Purpose: The purpose of the present study was to compare closed treatment with open reduction and internal fixation for displaced unilateral subcondylar and condylar neck fractures.

Materials And Methods: A total of 32 patients with displaced unilateral condylar fractures were included in the present study. Of the 32 patients, 27 were men and 5 were women.

Mandibular invasion of squamous cell carcinoma: factors determining surgical resection of mandible using computerized tomography and histopathologic study.

Aim: Carcinoma of the mandibular region can be considered as an important, distinct entity associated with special problems relating to diagnosis, evaluation of extension, planning of treatment, surgical techniques, treatment result and prognosis. The study was aimed to assess the accuracy of computerized tomography in demonstrating mandibular invasion, to assess the role of anatomic structures like cancellous spaces, the inferior alveolar nerve and periodontal spaces in spread of carcinomas in the mandible and to determine the spread of tumour within the mandible and the resection procedure to be carried.

Materials And Methods: 11 mandibular specimens which were resected for squamous cell carcinoma were examined clinically, radiographically and histopathologically.

Single-dose versus single-day antibiotic prophylaxis for orthognathic surgery: a prospective, randomized, double-blind clinical study.

Purpose: The purpose of this study was to evaluate the prophylactic value of single-dose antibiotic prophylaxis on postoperative infection in patients undergoing orthognathic surgery, compared to single-day antibiotics.

Materials And Methods: One hundred fifty patients were included in the study; 57 males and 93 females were divided into 2 groups with 75 in each group. Group 1 received a single dose of antibiotic prophylaxis and group 2 received a single day of antibiotic prophylaxis.

Influence of primary and secondary closure of surgical wound after impacted mandibular third molar removal on postoperative pain and swelling--a comparative and split mouth study.

Purpose: The purpose of the present study was to compare the influence of primary and secondary closure of the surgical wound on postoperative pain and swelling after removal of impacted mandibular third molars.

Materials And Methods: A total of 93 patients with bilaterally impacted mandibular third molars were included in the present study. All the patients underwent surgical removal of the bilaterally impacted teeth at the same appointment.

Droplet impingement dynamics: effect of surface temperature during boiling and non-boiling conditions.

This study investigates the hydrodynamic characteristics of droplet impingement on heated surfaces and compares the effect of surface temperature when using water and a nanofluid on a polished and nanostructured surface. Results are obtained for an impact Reynolds number and Weber number of approximately 1700 and 25, respectively. Three discs are used: polished silicon, nanostructured porous silicon and gold-coated polished silicon.

Self-assessment of facial form oral function and psychosocial function before and after orthognathic surgery: a retrospective study.

Orthognathic surgery is a well-accepted treatment for patients with skeletal discrepancies. The primary motivation of many patients who seek orthognathic surgery is esthetics and not for correction of functional disability. The treatment is incomplete if the surgeon attempts to correct the physical deformity alone without adequate understanding and regard for the emotional framework.

Pleomorphic adenoma in the infra-temporal space: the first case report.

The infratemporal fossa is a deep retromaxillary space corresponding to the inferior aspect of the middle cranial fossa. Tumours in the infratemporal fossa are very rare; therefore experience in their diagnosis and therapeutic management is very limited. Tumors that are reported commonly in the infratemporal region are nasopharyngeal carcinomas, juvenile angiofibromas and adenoid cystic carcinomas.

Management of obstructive sleep apnea: A dental perspective.

Sleep disordered breathing is a term which includes simple snoring, upper airway resistance syndrome, and obstructive sleep apnea (OSA). Simple snoring is a common complaint affecting 45% of adults occasionally and 25% of adults habitually and is a sign of upper airway obstruction. Snoring has also been identified as a possible risk factor for hypertension, ischemic heart disease, and stroke.

Pharyngeal airway changes following mandibular setback surgery.

Treatment of dentofacial deformities with jaw osteotomies has an effect on airway anatomy and therefore mandibular setback surgery has the potential to diminish airway size. The purpose of this study was to evaluate the effect of mandibular setback surgery on airway size. 8 consecutive patients were examined prospectively.