Maligni tumori pljuvačnih žlezda su retka oboljenja i u najvećem broju se javljaju u velikim pljuvačnim žlezdama. Cilj istraživanja bio je da se analizira trend incidencije malignih tumora velikih pljuvačnih žlezda kod stanovništva grada Beograda. Podaci su dobijeni iz Registra za maligne tumore centralne Srbije. Analizirani su svi slučajevi malignih tumora velikih pljuvačnih žlezda registrovani u Beogradu od 01. januara 1999. godine do 31. decembra 2010. godine. Trend kretanja i godišnji procenat promene incidencije izračunat je regresionom analizom uz pomoć tačaka spajanja (engl. joinpoint regression analysis). U ispitivanom periodu Registru je prijavljeno je 283 pacijenta (168 muškaraca i 115 žena) sa malignim tumorima velikih pljuvačnih žlezda. Standardizovana stopa incidencije svih tumora u ispitivanom periodu, za oba pola, bila je 0,87/100,000 stanovnika, odnosno 1,13 za muškarace i 0,67 za žene. Standardizovana stopa incidence se uvećavala sa godišnjim procentom promene od 6,4% kod oba pola (p<0,001). Rezultati su pokazali konstantno povećanje trenda incidencije malignih tumora velikih pljuvačnih žlezda kod stanovništva grada Beogradu između 1999. i 2010. godine.

The mos Tooth whitening is a procedure that removes stains and various discolorations of tooth surface. Discoloration of teeth may be endogenous and exogenous nature. The aim of this study was to investigate the impact of bleaching combined with daily use of drinks that cause tooth discoloration. Evaluated the changes in surface structure of enamel, and changes in hardness after bleaching. Were 20 extracted teeth. The teeth are marked with longitudinal lines halves (medial vestibular and distal surfaces). Tretitana mesial half of the 16% carbamide peroxide, a distal was left as control. NDT device HL400DL, duroskopskom method of enamel hardness was measured before treatment, after treatment and after remineralization. Olympus inverted microscope GX41 enamel structures were observed in the treated and control half of the tooth. After bleaching there is a difference compared to the untreated surface, that surface is bleached a few shades lighter, but after the use of coffee and soft drinks teeth back to the original dark color. Enamel microhardness after the treatment is somewhat small but not significant. With a magnification of 2000x and see the structural changes in enamel. Tooth whitening, but that the remineralization and the abstinence from prebojenih beverages and tobacco.

The two most common types of skin cancer are basal cell and squamous cell carcinoma, well known as nonmelanoma skin cancers. These cancers are the most common malignant tumors in white population and its incidence is increasing
dramatically. Information about the time of occurrence and cancer growth rate is a significant segment in establishing the primary skin cancer diagnosis. The aim of this prospective study is to determine the correlation between the size of basocellular and squamous cell carcinoma, represented through the function of cancer diameter and time period elapsed from their occurrence up to the surgical intervention. Apart from general anamnestic data, it was also insisted on as precise as possible datum referring to the cancer occurrence time. All cancers have been hystopathologically confirmed. Linear regressive analysis was used for establishing the interdependence between the diameters of tumors and their duration. The average growth of basocellular carcinoma in our patients was 4.3 mm on annual basis, i.e. 6.1 mm annually for squamous cell carcinoma. Tumor duration is a significant anamnestic datum for establishing diagnosis which can indicate a biological aggressiveness or skin cancer type. 

Skin cancer is the most common form of human cancer. The annual rates of all forms of skin cancer are increasing each year, representing a growing public health problem. The two most common form of skin cancer are basal cell and squamous cell carcinoma, well known as nonmelanoma skin cancer. Treatment of nonmelanoma skin cancer depends on the type and location of the skin cancer as well as the age and general health of the patient. Surgical excision is the most common metod in the treatment of basal and squamous cell carcinoma. One of disadvantages of simple surgical excision is incomplete margin control. The aim of this prospective study was to assess the influence of the size of the tumor and intraoperative surgical margin on the rate of complete excisions of skin cancer. A total of 64 basal cell and squamous cell carcinomas were excised and analyzed. Data pertaining to patient age, sex, lesion size and margin of excision were collected prospectively. After excision, all tumors specimens were histopathology confirmed completeness/ incompleteness of tumor excision. Tumor size ranged from 5mm to 36mm. Surgical margins were used in the range of 5-12mm. Skvamocelularni carcinomas were incompletely removed in 4.2%, and basal cell carcinomas in 10% of cases within the histopathological groups. Basal cell carcinomas: surgical margin of 5 mm radically removed 83.3% (up to 1cm); 8mm margin- 86.7% (1-2cm): and 10mm 100% (over 3cm). Squamous cell carcinomas: 10mm surgical margin removed 100% tumors up to 3cm.

Fracture of orbital floor is relatively frequenthly injuries. Fractures can appear same in war or peacefull conditions. War injuries can be bursting, and in many cases is very hard, with fracture, dislocation and defect more of orbit walls. Peacefulls injuries orbital floor appear mostly in car exident, fight, fall on face, and also in sports activity. Regarding specific anatomic structure, sensitive position and content of orbital cavity, even today exists different opinion especially by question of mechanism of originate, same as question of injury treatment.

After restoration of approximative cavities where gingive wall is forming subgingivaly occurs an damage of epitel of gingival sulcus and subepitel fibrous tissue. These damages occur partially in order of direct irritative effect of materials, and partially because of inadequately made definite reisen. Anomaly which may occur while making reisen, is effect of micro leakage between reisen wall of cavities roughness and reisen parts which prominate above anatomic tooth sphere , enable faster and bigger accumulating of dental plaque. Gingive inflammation is widening deeper in parodontium trough vascular network situated in interdental bone septum. Inflammation is constantly spreading from the point and reaches parodontium. The aim of this study is to estimate clinical changes in parodontium within certain group of patients of different age and sex, caused by inadequate dental restoration. Results of this research present that anomaly in dental reisen , have great influence on inflammation reaction of parodontium. Composite reisen cause higher degree of inflammatory reaction in compared to amalgam reisen