Internal Adaptation of Implant-Supported, Polymer-Infused Ceramic Crowns Fabricated by Two CAD/CAM Systems.

Purpose: The aim of this in vitro study was to compare the internal 3D adaptation of polymer-infused ceramic crowns fabricated using two CAD/CAM systems: CEREC inLab MC XL and Ceramill Motion 2 (5X).

Materials And Methods: Twenty-five implant-supported metal-ceramic crowns were fabricated conventionally using the lost-wax technique, and the outer contour was scanned to serve as a guide for designing the polymer-infused ceramic CAD/CAM crowns. Twenty-five crowns were fabricated using CEREC, and 25 crowns were fabricated using Ceramill.

Comparison of escalating, constant, and reduction energy output in ESWL for renal stones: multi-arm prospective randomized study.

This study was designed to find out the optimized energy delivery strategy in Shock Wave Lithotripsy (SWL) that yield to the best stone-free rate (SFR). In this clinical trial, 150 consecutive patients were randomized into three groups: (a) Dose escalation, 1500 SW at 18 kV, followed by 1500 SW at 20 kV then 1500 SW at 22 kV. (b) Constant dose, 4500 SW at 20 kV.

Effect of modification of shock-wave delivery on stone fragmentation.

Purpose Of Review: Shock-wave lithotripsy has been the mainstay of urinary-stone treatment over the past 20 years, with three generations of lithotripters now in the market place. Little improvement, however, has been made in the overall efficiency, since the original Dornier HM3 lithotripter. Over the past 5 years much progress has been made in the basic research of shock-wave lithotripsy, with better understanding of the mechanisms involved in stone fragmentation.

Slow versus fast shock wave lithotripsy rate for urolithiasis: a prospective randomized study.

Purpose: We determined the effect of shock wave lithotripsy (SWL) rate on treatment outcome in patients with renal and ureteral stones.

Materials And Methods: A total of 156 patients were prospectively randomized to receive SWL using a slow (60 pulses per minute) or fast wave rate (120 pulses per minute). Inclusion criteria were patients with a single radiopaque renal or ureteral stone not exceeding 30 mm in maximum diameter.

Erectile function following high-energy thick loop prostatectomy.

Objectives: To evaluate the effects of the high energy cutting current that is used in conjunction with the thick loop on erectile function in patients with benign prostatic hyperplasia (BPH) undergoing prostatectomy.

Patients And Methods: Seventy patients with BPH were included in this prospective study. All patients underwent transurethral vaporization resection of the prostate (TUVRP) using the "Wing" thick loop and 250-Watt cutting current.

Post traumatic high-flow arterial priapism. The need for increased awareness among health care professionals.

High flow arterial priapism is a rare urological emergency. Presentation, diagnosis and institution of definitive management are often delayed. We describe our experience with this diagnostic entity and reviewed the literature to define possible reasons for the delayed diagnosis and management.

Long-term efficacy of sildenafil and tachyphylaxis effect.

Purpose: We observed that patients who initially responded to sildenafil frequently became resistant to it with time. We evaluated the long-term efficacy of sildenafil.

Materials And Methods: A telephone survey was conducted of patients during the first year of sildenafil usage, and another one was completed 2 years later of the same group.

Changes of serum prostate-specific antigen following high energy thick loop prostatectomy.

We evaluated the effect of the high electrocuting energy used with the thick loop, in transurethral vaporization resection of the prostate (TUVRP), on serum prostate-specific antigen (PSA). Forty-eight patients with benign protatic hyperplasia (BPH) were included in this prospective single arm sequential study. All patients had TUVRP using the 'Wing' thick resection electrode (Richard Wolf, Germany).

Paramedian extraperitoneal approach for combined nephrectomy and augmentation ureterocystoplasty in children with neurovesical dysfunction.

Objectives: We describe and evaluate our approach to combined nephrectomy and augmentation ureterocystoplasty using a single paramedian extraperitoneal incision.

Patients And Methods: Three patients with neurogenic bladders (2 posterior urethral valves and 1 myelodysplasia) underwent nephrectomy and augmentation ureterocystoplasty. The mean age of the patients was 4.

Granulosa cell tumor of the adult type: a case report and review of the literature of a very rare testicular tumor.

We report a case of testicular granulosa cell tumor of the adult type in a 48-year-old man. Microscopically, the tumor consisted of round to ovoid cells with grooved nuclei that were arranged in several patterns, including microfollicular, macrofollicular, insular, trabecular, gyriform, solid, and pseudosarcomatous. These cells demonstrated strong immunopositivity with MIC2 (O13) antibody, vimentin, and smooth muscle actin and focal positivity with cytokeratin.

The 'Wing' versus the 'Vapor Cut' electrodes in transurethral electrovaporization-resection of the prostate: comparative changes in safety parameters.

We compared the early safety features of two-band resection devices used in transurethral vaporization-resection of the prostate (TUVRP). Ninety patients with prostatic outflow obstruction were prospectively evaluated in two open studies for the treatment using the 'Wing' cutting electrode in group 1 (Richard Wolf, Germany) and the 'Vapor Cut' electrode in group 2 (Karl Storz, Germany). Patients in both groups were comparable in age, presentation, prostate size and blood parameters.

Prospective randomized study of transurethral vaporization resection of the prostate using the thick loop and standard transurethral prostatectomy.

Objectives: Transurethral vaporization resection of the prostate (TUVRP) is a recent modification of the standard transurethral prostatectomy (TURP). The procedure uses one of the novel, thick resection loops coupled to augmented electrocutting energy. We evaluated the safety and efficacy of TUVRP in comparison with TURP.

Transurethral vaporization-resection of the prostate versus standard transurethral prostatectomy: comparative changes in histopathological features of the resected specimens.

Objectives: Transurethral vaporization resection of the prostate (TUVRP) is a recent modification of the standard transurethral resection of the prostate (TURP). TUVRP uses a band electrode coupled to a high electrocuting energy to achieve simultaneous resection, vaporization and coagulation of the prostate. We evaluated the histopathological resection specimens of patients treated with TUVRP to see whether the higher energy used will result in thermal artifacts that will interfere with the pathological evaluation of the prostate, and compared the results to TURP specimens.

Extracorporeal shockwave lithotripsy for ureterolithiasis in patients with urinary bilharziasis: efficacy and variables that influence treatment outcome.

Objectives: Schistosomiasis affecting the ureter is commonly accompanied by ureteric dilatation with or without ureteric stricture and altered ureteric wall motility that can influence extracorporeal shockwave lithotripsy (ESWL) results. This study attempts to identify variables that may influence the outcome of ESWL in the treatment of ureterolithiasis in patients with urinary bilharziasis.

Patients And Methods: Forty-three patients with urinary schistosomiasis and ureterolithiasis treated with ESWL were reviewed.

Augmentation ureterocystoplasty with ipsilateral renal preservation in the management of patients with compromised renal function secondary to dysfunctional voiding.

We evaluated the role of ureterocystoplasty with ipsilateral renal preservation in the management of patients with neurovesical dysfunction and impaired renal function. The procedure was carried out on 6 patients with a mean age of 8.5 years.

Prevalence of intratubular germ cell neoplasia of the testis.

Full text is available as a scanned copy of the original print version.

Unilateral traumatic hematocele--an unusual presentation of bilateral testicular rupture.

The case of a young male patient with penile laceration and right hematocele following blunt trauma to the genitalia is presented. Both testes were found ruptured at exploration and were repaired. The value of early surgical intervention in scrotal trauma is reiterated and indications for bilateral testicular exploration in cases of unilateral traumatic hematocele are suggested.

Transurethral electrovaporization-resection of the prostate using the "wing" cutting electrode: preliminary results of safety and efficacy in the treatment of men with prostatic outflow obstruction.

Objectives: Transurethral vaporization-resection of the prostate (TUVRP) is a modification of the standard transurethral prostatectomy (TURP). The technique uses the "Wing" resection loop with electrovaporization current to achieve simultaneous resection, vaporization, and coagulation of prostatic tissue. We evaluate the early safety and efficacy results of TUVRP in the treatment of patients with prostatic outflow obstruction.

Extracorporeal shock wave lithotripsy for the rescue of post-endoscopic or surgically retained biliary duct stones: does saline irrigation affect the outcome?

Extracorporeal shock wave lithotripsy (ESWL) has been found valuable in situations where obstructing stones in the common bile or intrahepatic ducts are retained following surgery or attempted endoscopic removal. However, success rates are dependent on the type of ESWL system employed and upon a high frequency rate of repeated treatment sessions. We outline our experience with 23 cases of retained, obstructing bile duct stones, ranging in size from 10 to 40 mm diameter, treated with Dornier HM3 ESWL.

Extracorporeal shock wave lithotripsy for lower pole nephrolithiasis: efficacy and variables that influence treatment outcome.

Objectives: Extracorporeal shock wave lithotripsy (ESWL) for the treatment of lower caliceal stones (LCS) tends to have a poor success rate, prompting many urologists to advocate alternative treatment modalities. This study attempts to identify variables that may influence the outcome of ESWL treatment for LCS to help in selecting patients that are likely to benefit from the treatment.

Methods: One hundred forty-two patients with isolated LCS treated with the Dornier HM3 lithotriptor were reviewed.

Survival and prognostic factors in renal cell carcinoma in Saudi patients: A ten year review.

Full text is available as a scanned copy of the original print version.

Rare association of unilateral renal oncocytoma and angiomyolipoma.

A 65-year-old woman presented to the hospital with left loin pain and haematuria, radiological diagnostic studies demonstrated left renal mass suggestive of renal cell carcinoma and radical nephrectomy was performed. Pathological examination demonstrated the very rare association of renal angiomyolipoma and oncocytoma.

Extracorporeal shock-wave lithotripsy monotherapy in renal pelvic ectopia.

Objectives: To determine the efficacy of extracorporeal shock-wave lithotripsy (ESWL) in the treatment of urinary stones in pelvic kidneys.

Methods: Fourteen male patients with renal pelvic ectopia and stones were treated with ESWL monotherapy using the unmodified Dornier HM3 lithotriptor with its original generator and ellipsoid. Twelve patients were treated in the prone position using cystoscopically placed ureteral catheters to aid in fluoroscopic localization, whereas 2 patients were treated in the supine position.

Renal tumors in adult Saudi patients: A review of 43 cases.

Seventy-nine patients with renal tumors were seen at King Khalid University Hospital (KKUH) over a 10-year period from 1985 through November 1995. In a retrospective study, we analyzed the records of 43 Saudi patients from all over the Kingdom; they represented 54% of all patients encountered. Fourteen percent of the patients had benign renal tumors in the form of angiomyolipoma and oncocytoma.