Inferior alveolar nerve preservation during resection and reconstruction of the mandible for benign tumors as a factor improving patient's quality of life.

This prospective study aimed to evaluate neurosensory disturbance and quality of life in patients who underwent mandibular resection for benign tumors and whose inferior alveolar nerve (IAN) was either preserved or sacrificed. Mandibular resection was indicated owing to the presence of osteoradionecrosis in 25 patients and ameloblastoma in 15 patients. Resection was unilateral in 24 patients and bilateral in 16 patients.

Refined Approach to Preservation of the Inferior Alveolar Nerve during Resection and Primary Reconstruction of the Mandible.

Sacrifice of the inferior alveolar nerve (IAN) during resection of the mandible is taken as a rule. In 1987, Jensen and Nock described a technique that permitted placement of dental implants in the atrophied mandibular alveolar ridge that lacked sufficient vertical height superior to the mandibular canal. This technique was used by some authors to preserve continuity of the IAN during resection of the mandible in patients with benign tumors.

[CHANGES IN BIOCHEMICAL MARKERS ASSOCIATED WITH AORTIC STENOSIS DEVELOPMENT IN PATIENT WITH AORTIC VALVE CALCIFICATION ACCORDING TO GENDER].

The study aimed at identifying the biochemical changes associated with formation of aortic stenosis in patients with aortic valve calcification according to gender. In 109 patients with aortic valve calcification revealed during echocardioscopy clinical (age, body mass index, smoking, arterial hypertension, coronary artery disease, diabetes mellitus), laboratory and instrumental (blood lipids, including lipoprotein (a) (LP(a)), apolipoproteins A and B, C-reactive protein (CRP), uric acid (UA), glomerular filtration rate, alkaline phosphatase, deoxypyridinoline (DPD), oxyproline, fetuine A, total and ionized calcium, bone mineral density) characteristics were assessed according to gender. Increased levels of LP (a) (0,45 (0,29; 0,64) versus 0,16 (0,09; 0,34) g/l, р=0,002), CRP (5,69 (5,35; 6,70) vs 3,11 (0,97; 4,61) mg/l, р=0,0003), UA (0,338 (0,250; 0,445) vs 0,275 (0,195; 0,335) mmol/l, р=0,068), total (29,6 (23,1; 36,2) vs 23,3 (20,7; 27,9) mcmol/l, р=0,005) and free (15,1 (13,0; 18,9) vs 12,5 (11,2; 16,5) mcmol/l, р=0,019) oxyproline, DPD (8,1 (7,2; 10,1) vs 4,5 (3,8; 6,3) Pyrid nmol/creatinine mmol, р<0,0001) and decreased level of fetuine A (27,6 (25,2; 29,4) vs 29,9 (27,8; 31,1) ng/ml, р=0,073) were revealed in patients with AS in man groups; and increased levels of total cholesterol (5,36 (4,88; 5,67) vs 5,0 (4,53; 5,31) mmol/l, р=0,066), triglycerides (1,92 (1,64; 2,45) vs 1,33 (1,18; 1,71) mmol/l, р=0,0001), CRP (6,31 (5,11; 8,42) vs 3,85 (3,24; 5,14) mg/l, р=0,0002), UA (0,372 (0,281; 0,407) vs 0,236 (0,141; 0,297) mmol/l, р=0,0007), total (25,1 (23,4; 27,9) vs 23,1 (20,4; 25,6) mcmol/l, р=0,011) and free (13,7 (12,8; 15,1) vs 12,1 (10,4; 13,6) mcmol/l, р=0,002) oxyproline, DPD (10,2 (8,6; 14,3) vs 8,1 (6,1; 10,9) Pyrid nmol/creatinine mmol, р=0,013) - in woman groups.

Determination of dimensions of exfoliating materials in aqueous suspensions.

A method for measurement of dimensions of platy particles of exfoliating, or delaminating, materials, such as clays, in aqueous suspensions in situ is proposed. Equivalent spherical diameter (esd), measured by many common methods, depends more on the major (lateral) dimension of a particle, while it is less sensitive to changes of the particle thickness. Addition of the second method, results of which are a function of the particle diameter and thickness too, would provide more accurate determination of the particle dimensions.