Calculi (Calculus)

01/01/1990 - "The results from the six month calculus examinations indicated that the dentifrice containing soluble pyrophosphate without the copolymer did not provide a statistically significant reduction in supragingival calculus after an oral prophylaxis. "
01/01/1997 - "In this study the essential oil dentifrice containing 1.3% pyrophosphate ion was effective in inhibiting the development of supragingival calculus."
01/01/2003 - "The intra-oral appliance, developed, tested and reported here, appears useful to assess and predict the long-term clinical efficacy of anti-calculus agents in dentifrices."
01/01/2000 - "A calculus clinical study comparing the efficacy of two commercially available dentifrices."
12/01/1995 - "A twelve-week independent and double-blind clinical study was conducted on a sample of 143 calculus forming adult male and female subjects--with the average age of 39.11 years--to compare directly the anticalculus efficacy of three commercially-available dentifrices, as compared to a placebo dentifrice. "

04/01/2009 - "When comparing measurement errors between stones of different composition in vitro, the error for calcium oxalate calculi was significantly different from the gold standard for all methods except bone window settings with magnification. "
04/01/2012 - "The construction of an oxalate-degrading intestinal stem cell population in mice: a potential new treatment option for patients with calcium oxalate calculus."
01/01/2013 - "The objective of this study is to determine in a case series (four patients) how calcified deposits in renal papillae are associated with the development of calcium oxalate monohydrate (COM) papillary calculi. "
08/15/2007 - "The number of calcium oxalate-containing calculi in the upper portion of the urinary tract increased significantly during the study period. "
09/01/1993 - "Studies on structure of calcium oxalate monohydrate renal papillary calculi. "

03/01/2001 - "Medical treatment is useful in the management of uric acid calculi. "
01/01/2005 - "This study was designed to evaluate the efficacy of local litholytic irrigation (LLI) in the treatment of ureteral uric acid calculi. "
02/15/2009 - "To study the percentage of uric acid calculus in uroliths and its metabolic character in Dongjiang River valley. "
01/01/2005 - "The study of the calculi composition showed that oxalate was found in most UUT, and uric acid was found in most LUT CONCLUSION: Ureteric calculi were most common in the South of Thailand. "
09/01/1985 - "The in vitro findings were confirmed in vivo in a limited study in pigs with human uric acid calculi surgically placed in their kidneys. "

06/01/2014 - "PCNL is considered to be the gold-standard approach to treating struvite calculi, but adjuncts might be used when deemed necessary. "
01/01/1996 - "Primary porosity, which can facilitate interaction between the calculus and changing urine composition, may explain the efficacy of dietary or medicinal manipulations to promote the dissolution of struvite-containing uroliths from this species."
03/01/1992 - "Long-term efficacy of combination therapy for struvite staghorn calculi."
08/01/2001 - "Further study is required to assess the in vivo effect of this procedure for treating and preventing upper tract struvite calculi."
01/01/2015 - "Further investigation by the vendor identified 2 of 100 rats with struvite calculi from the same colony. "

10/01/2005 - "Data have been analysed from: a 3-year caries clinical trial of six toothpastes conducted in Lanarkshire, Scotland that involved 3000 children, Study 1; a caries epidemiological study in the Isle of Lewis that involved 228 children, Study 2; a calculus formation study carried out at Port Sunlight using a wide age range of adults, Study 3. Baseline data taken from Study 1 show that caries prevalence is highly significantly lower in calculus-prone than in calculus-free subjects (P < 0.0001). "
11/01/1997 - "They were stratified by sex, examiner, and presence of calculus and caries, and were allocated at random to one of the four toothpastes under study. "
06/01/1994 - "They were stratified by sex, examiner, presence of calculus and caries, and allocated at random to one of the six toothpastes under study. "
02/01/1991 - "With the use of modern methodology to evaluate toothpaste formulations before clinical trials, many new products containing anti-calculus and other agents will probably become available in the coming years."
08/01/2015 - "Participants then recruited seven to ten patients from their practices (offices), carried out a baseline assessment of: plaque, gingival health, calculus and staining at anterior teeth, and gave the patients a questionnaire asking about their teeth and then provided a 3-month supply of a test toothpaste. "

01/01/1995 - "Effect of a pre-brush mounthrinse containing triclosan and a copolymer on calculus formation: a three-month clinical study in Thailand."
02/01/2013 - "Supragingival calculus deposition was least in triclosan + NaF group followed by CHX + triclosan + NaF + ZnCl(2) and CHX. "
01/01/1995 - "The results indicated that the subjects using triclosan/copolymer mouthrinse had 23.17% less supragingival calculus than the placebo mouthrinse subjects. "
07/01/1992 - "A meta-analysis is conducted for six dental clinical trials that evaluated a triclosan/copolymer formulation for the reduction of plaque, calculus or gingivitis. "
10/01/1997 - "Unlike the first generation of agents, the triclosan/copolymer/sodium fluoride system is effective in long-term clinicals and does not cause staining of teeth, increase in calculus, or disturbance in the oral microbial ecology."

07/01/2010 - "Treatment with tamsulosin after ESWL appears to be effective in assisting stone clearance in patients with renal and ureteric calculi. "
12/01/2008 - "To study the effects of tamsulosin on ureteric contractions and its effects on the basal tone of human ureteric specimens, as clinical trials with tamsulosin have shown promising results in the spontaneous expulsion of lower ureteric calculus, but the mechanism of action of tamsulosin in the expulsion of ureteric calculus has not been elucidated in in-vitro studies on human ureters. "
07/01/2010 - "To make a definite clinical recommendation to use tamsulosin after ESWL for renal and ureteric calculi, a high quality confirmatory trial is warranted."
10/01/2012 - "Based on efficacy demonstrated in the adult population, tamsulosin was evaluated with regard to facilitating ureteral stone expulsion in children presenting with distal ureteric calculi. "
05/01/2010 - "The presence of alpha-1A adrenoceptor in the distal ureteral smooth muscle prompted the use of tamsulosin, a selective alpha-1 blocker, to promote spontaneous passage of distal ureteral and juxtavesical calculi. "

03/01/1989 - "While epidemiologic and laboratory studies provide only equivocal support for a synergistic relationship, several clinical trials with allopurinol have demonstrated a reduction in calculus recurrence. "
11/27/1986 - "After the study, the placebo group had 63.4 percent fewer calculi (P less than 0.001), whereas the allopurinol group had 81.2 percent fewer calculi (P less than 0.001). "
04/14/2000 - "Histopathological observations showed that allopurinol induced calculus formation in the collecting tubules and papillary duct. "
07/01/1993 - "X-ray diffraction and high pressure liquid chromatography were performed on all calculi from dogs known to have been given allopurinol (n = 19).(ABSTRACT TRUNCATED AT 250 WORDS)"
11/27/1986 - "When the treatment groups were compared by actuarial analysis, the allopurinol group was found to have a significantly longer time before recurrence of calculi (P less than 0.02). "

03/01/1985 - "Spontaneous dissolution of the cystine calculi was observed and many tiny fragments of cystine were expulsed through the nephrostomy, following which renal function improved. "
01/01/2006 - "In this study, we reviewed cystine calculi cases in the west of Iran to determine their common presentations and response to different therapeutic modalities. "
01/01/2006 - "Pediatric cystine calculi in west of Iran: a study of 22 cases."
01/01/1997 - "Patients with radiolucent or cystine stones, stones larger than 3 cm or staghorn calculi, multiple stones with a total burden of more than 3 cm and those not amenable to follow-up were excluded from the study. "
12/01/1992 - "To study the radiopacity of cystine calculi. "

10/01/1997 - "Unlike the first generation of agents, the triclosan/copolymer/sodium fluoride system is effective in long-term clinicals and does not cause staining of teeth, increase in calculus, or disturbance in the oral microbial ecology."
01/01/1990 - "The purpose of this study was to compare the effect on supragingival calculus of a dentifrice containing soluble pyrophosphate and 0.24% sodium fluoride to a placebo dentifrice. "
01/01/1990 - "Recent clinical studies have indicated that dentifrices containing soluble pyrophosphate and sodium fluoride can reduce the formation of supragingival calculus. "
01/01/1990 - "The results from the 3-month examinations indicated that the dentifrice containing the soluble pyrophosphate and sodium fluoride did not significantly reduce supragingival calculus as compared to the placebo dentifrice. "
03/01/1987 - "The effect of a dentifrice containing soluble pyrophosphate and sodium fluoride on calculus deposits. "

02/01/2013 - "Good outcomes have been reported with shockwave lithotripsy (SWL), percutaneous nephrolithotomy (PCNL) and ureteroscopy, but optimal management of the risk factors leading to calculi formation (i.e., prevention) will remain the most cost-effective management."
01/01/2010 - "RIRS is the best option for managing extracorporeal shockwave lithotripsy failed and post PCNL residual calculus. "
06/01/2004 - "Recurrence of calculi in the treated gland was observed during a median follow-up period of 57 months in four patients with complete ultrasonographic clearance of the stone occurring 10 to 58 months after lithotripsy. "
03/01/2015 - "The suggested method of contact ureteral lithotripsy is safe and provides several advantages over traditional contact ureteral lithotripsy in a fluid medium, such as: physiologic validity, absence of calculus hypermobility (increased mobility), improved visualization during surgery and high cost effectiveness."
08/01/1999 - "To investigate the safety and efficacy of electrokinetic lithotripsy (EKL), a ballistic lithotripter which uses high-energy magnetic fields to propel an impactor to fragment calculi. "

08/01/2004 - "In addition, irradiation with the Er:YAG laser has a bactericidal effect with reduction of lipopolysaccharide, high ability of plaque and calculus removal, with the effect limited to a very thin layer of the surface and is effective for implant maintenance. "
10/01/2009 - "To investigate the safety and efficacy of the high-power (70 W) holmium laser in percutaneous nephrolithotripsy (PCNL) for staghorn calculi. "
06/01/1995 - "The Ho:YAG laser was effective for fragmenting all types of calculi. "
03/01/2008 - "Flexible ureteroscopy using holmium laser is a safe and effective option for the treatment of upper urinary tract calculi. "
07/01/2007 - "The use of PTHC with holmium:YAG laser ablation is safe and efficacious, but requires prolonged biliary access and often multiple procedures to ensure clearance of all calculi."

11/01/1991 - "Fragmentation efficiency was significantly improved requiring many fewer laser pulses to fragment calculi of similar size and composition, and decreasing the need for auxiliary methods to complete stone fragmentation. "
09/01/2015 - "In MSK patients with repeated recurrences of symptomatic stones, ureteroscopic laser papillotomy could be a safe and effective treatment option for radiographically visible intraductal papillary calculi."
12/01/2015 - "This study compared the performance of three laser fluorescence (LF) devices (DIAGNOdent Classic, DIAGNOdent Pen and KEY3 laser) under standardized laboratory conditions for detecting subgingival deposits of calculus on root surfaces of extracted teeth in typodonts. "
06/01/2014 - "Studies utilizing laser technology may demonstrate positive effects on 1) selectively decreasing the biofilm environment, 2) removing calculus deposits and neutralizing endotoxin, 3) removing sulcular epithelium to assist in reattachment and decreased pocket depth, and 4) biostimulation for enhanced wound healing. "
05/01/2010 - "The purpose of this study was to investigate the efficiency of hand instrumentation and laser irradiation on calculus removal from the root surfaces, in vitro. "

09/25/1991 - "endoscopic sphincterotomy was successful in 98% of patients, and resulted in clearance of calculi from the bile duct in 75%, and in a further 8% symptoms were successfully controlled by sphincterotomy with or without endoprostheses, despite residual calculi. "
09/25/1991 - "endoscopic sphincterotomy provides a safe and effective means of managing bile duct calculi, even if stone extraction cannot be completed."
01/01/1996 - "In 9 cases we found residual concrements: 7 patients required postoperative endoscopic papillotomy and in 2 cases the calculi where eliminated with a dormia basket introduced via drainage tube. "
02/01/1992 - "Fifty patients with choledochal calculus were treated by endoscopic sphincterotomy (EST) and forty-nine of them were cured. "
04/06/1996 - "Randomised trial of endoscopic sphincterotomy with gallbladder left in situ versus open surgery for common bileduct calculi in high-risk patients."

02/01/2007 - "Prophylactic cholecystectomy (PC) is advised after ES and clearance of ductal calculi on the basis of a randomized controlled trial that showed a requirement for cholecystectomy in 36% of patients who defer surgery. "
01/01/1989 - "The second step (after 20 days) was that of the radical surgical intervention in a stage of remission (cholecystectomy in 5 patients and cholecystectomy with choledochotomy and extraction of calculi from the common bile duct in 2). "
09/01/2011 - "Cystic duct remnant calculi after cholecystectomy."
03/01/2008 - "Virtual surgery of cholecystotomy for calculus removal and cholecystectomy were performed with Phantom. "
03/01/2005 - "Various strategies have been proposed for the management of retained calculi within the biliary tree following cholecystectomy. "