Consumption of high-dose statins in patients older than 65 years in the Republic of Croatia in the period 2005 - 2015.

OBJECTIVE: Patients over 65 years of age on high-dose statins are most sensitive to the development of adverse effects of statins. The objective of this study is to analyze the consumption of high-dose statins in this patient group in Croatia in the period of 2005 - 2015. MATERIALS AND METHODS: For the period of January 1, 2005 to December 31, 2015, the Croatian Institute for Health Insurance provided us with the total number of: all insured, insured over 65 years of age, insured using statins, insured using high-dose statins, insured over 65 using statins, insured over 65 using high-dose statins, number of packages dispensed through all community pharmacies for all statins registered in Croatia divided by year and sex. Studied high-dose statins were: simvastatin 40 mg; atorvastatin 40 mg, 60 mg, 80 mg; fluvastatin 80 mg; rosuvastatin 40 mg. The yearly consumption of each form of statin was calculated in DDD/1,000 insured/day and was statistically processed. RESULTS: The consumption of all statins increased by 194%, while the consumption of high-dose statins in patients over 65 increased by 296%. The number of all patients on statin therapy increased by 58%, the number of patients over 65 on statin therapy increased by 87%, and the number of patients over 65 on high-dose statins increased by 326%. 60% of all patients over 65 receiving high-dose statins were women. The most used high-dose statins were atorvastatin and simvastatin. CONCLUSION: Consumption of all statins increased, mostly high-dose statins in the 65+ age group, the most sensitive population for adverse effects. The number of 65+ patients on high-dose statins grew much faster than the general statin user group, thus increasing the risk potential. Women are dominating all age and dose groups of statin users.

Frequency of bacetrial content finding in persistant periapical lesions.

OBJECTIVES: To determine the percentage of persistant apical lesions positive for bacterial nucleic acids, to detect microorganisms difficult to cultivate in persistant apical lesions by PCR and relate them to endodontic failure, clinical symptoms and diabetes mellitus. MATERIALS AND METHODS: The samples of persistent apical lesions were collected during apicoectomy. Bacterial ubiquitous primer 16S rRNA was used to detect 16S ribosomal RNA in 36 samples. A species-specific PCR was performed with primers targeted to the bacterial 16S rRNA genes of Prevotella Nigrescens, Pseudoramibacter alactolyticus, and Propionobacterium propionicum. RESULTS: Six samples (16.67%) were positive for bacterial ribosomal RNA. Pseudoramibacter alactolyticus was detected in three samples. Propionibacterium propionicum and Prevotella nigrescens were detected in one sample each. The prevalence of infection of such lesions with P. intermedia, P. propionicum and P. alactolyticus is low. CONSLUSION: The study we conducted gave insufficient data about extraradicular infection and its connection with diabetes mellitus and clinical symptoms. CONCLUSIONS: Apical lesions persisting after endodontic treatment could harbor microorganisms other than Actinomyces and Propionicum species.

Effectiveness of Er:YAG laser in cavity preparation for retrograde filling--in vitro study.

The purpose of this study was to determine the sealing quality of Super EBA cement in laser prepared root-end cavities in comparison with root-end cavities classically prepared with steel burrs. Two groups of three millimeter root sections were prepared. The first group was prepared with the Er:YAG laser and the second group with a steel burr mounted on a surgical handpiece. The sections were filled with Super EBA cement and tested for leakage with fluid transport techniques. The sealing quality of Super EBA cement in the classically prepared root-end cavities was better, but there was no statistically significant difference between the two preparation techniques. The possible reason for greater leakage in the laser prepared root-end cavities was probably the irregular shape of the root-end cavity.

Erbium:YAG laser versus ultrasonic in preparation of root-end cavities.

The aim of this in vitro study was to compare the sealing effectiveness of the Erbium:YAG laser to the sealing effectiveness of an ultrasonic device in the preparation of similar retrograde cavities using different retrograde filling materials. After root-canal instrumentation and filling, apices of 60 single-rooted teeth were resected. Retrograde class I cavities 3 mm deep were prepared using an ultrasonic device (group A) and Er:YAG laser (group B). An ultrasonic unit was used with CT-5 retrotip at the frequency of 32 KHz. Laser beam parameters were a pulse of very short duration (100 micros), energy of 280 mJ, and repetition rate of 10 Hz. Cavities of each group of 10 samples were filled with mineral trioxide aggregate (MTA), Super-EBA, and IRM. Microleakage was measured using a fluid transport model. The results showed that cavities prepared with Er:YAG laser have significantly lower microleakage for all tested materials.

In vitro study of the variable square pulse Er:YAG laser cutting efficacy for apicectomy.

BACKGROUND AND OBJECTIVES: Variable square pulse (VSP) Er:YAG laser should be quicker than older Er:YAG lasers. The objectives were: (1) comparison of VSP laser and mechanical handpiece efficacy for apicectomy and (2) determination of optimal pulse width/energy/frequency combination. STUDY DESIGN/MATERIALS AND METHODS: Sixty extracted, single-rooted mature human teeth with round apical parts were instrumented, root filled, cleaned, and divided into four groups. Apical 2 mm of each root were apicectomized with mechanical handpiece and Er:YAG laser with three different settings (LaserA = 200 mJ/300 microseconds/ 8 Hz; LaserB = 200 mJ/100 microseconds/8 Hz; LaserC = 380 mJ/100 microseconds/20 Hz). Timing results were statistically compared. RESULTS: LaserC was the most efficient setting. Differences between groups were significant except between LaserC-Mechanical and LaserA-LaserC (P < 0.05). CONCLUSIONS: VSP Er:YAG laser used for apicectomy is slower by a factor of 7-31 than mechanical handpiece, but treatment outcome is acceptable. Optimal settings for apicectomy with VSP laser are 380 mJ/100 microseconds/20 Hz.