MDS PREP
During the extraction of maxillary first molar, the palatel root tip of molar slipped into the maxillary sinus. Proper way to approach to recovery is through the 
1) Same socket by enlarging the opening through which the root entered the sinus
2) Maxillary incisive fossa
3) Maxillary incisive fossa medial to canine
4) None of the above
                            Oral Surgery
                            Answer: 2
                            
                        A patient of head injury should be carried in which position
1) Prone
2) Supine
3) Lateral
4) Sitting
                            Oral medicine
                            Answer: 3
                            
                        Lateral food impaction occurs mainly due to
1) Uneven alteration of occlusal surface
2) Open proximal contact
3) Open gingival embrasure
4) All of the above
                            Periodontics
                            Answer: 3
                            
                        Four days after multiple dental extractions, an elderly fair skinned woman complains of black and blue marks over her neck. The most probable diagnosis is
1) Polycythaemia
2) Leukaemia
3) Postoperative ecchymosis
4) Manifestation of basal cell carcinoma
                            Oral Surgery
                            Answer: 3
                            
                        'Flower vase' appearance in IVP is seen in  
1.Poly cystic kidney disease                
2.Horse Shoe Kidney               
3.Hydronephrosis       4.Ectopic kidney 
                            General Surgery
                            Answer: 2
                            
                        The most efficient method of sterilization in dental practice is
1. ultraviolet radiation
2. moist heat at 121°C for 20 min
3. boiling for 20 mm
4. dry heat at 40° C for 2 hours
                            Microbiology
                            Answer: 2
                            The most efficient method of sterilization in dental practice is moist heat at 121°C for 20 min