STENCILDENT

GYPSUM PRODUCTS   DENTAL MATERIALS Gypsum was found in mines around city of Paris so its called plaster of Paris. ADA SPECIFICATION NUMBER: 25 Gypsum is classified into 5 types : Type1: Dental plaster for impression Type2: Dental plaster ,class 1- mounting,class 2-for moulds Type3: Dental stone for model Type4: Dental stone -high strength and low expansion Type5: Dental stone - high strength and high expansion  1 MOLE=    6.02214076×10 23 . Gaughing water: Excess water mixed with plaster ,makes manipulation quite easier . mechanism of setting in gypsum is explained through 3 theories out of which dissolution precipitation theory is widely accepted.                                    Advantage: 1)record fine details with least pressure 2)dimensional changes very minimal  3) economical Disadvantage: 1)gag reflex 2)cannot be used in undercut regions  Thanks for reading kindly comment down ur suggestion below 

  VIRUS STRUCTURE AND CLASSIFICATION Virus are obligate intercellular  organism sub microscopic entity consisting of a single nucleic acid surrounded by a protein coat and capable of replication only within the living cells  STRUCTURE: size: 10-100 nm; 1/10th size of bacterium . shape : spherical genome material : DNA OR RNA; never both  protective shell:    capsid : Its made of any identical protein subunit they protect gentic material ,symmetrically organised. Envelope :  lipid containing membrane that surrounds the virus particle located outside the capsid acquired during replication . CLASSIFICATION OF VIRUS: A) BASED ON MORPHOLOGY B) CHEMICAL COMPOSITION C)      MODE OF REPLICATION THANKS FOR READING  NOTE:please feel free to comment down your valuable suggestion below .

                      STAGES AND STEPS IN                                        TOOTH  PREPARATION                 TOOTH PREPARATION INVOLVES 2 STAGES  1) INITIAL TOOTH PREPARATION:    OUTLINE FORM AND INITIAL DEPTH PRIMARY RESISTANCE FORM  PRIMARY RETENTION FORM CONVENIENCE FORM 2) FINAL TOOTH PREPARATION  REMOVAL OF REMAINING CARIES PULP PROTECTION SECONDARY RESISTANCE AND RETENTION FORM FINISHING OF EXTERNAL WALL FINAL PROCEDURE OF CLEANING AND INSPECTING  Each stage and step is explained in detail please refer to above notes . note:please do not  download and share all rights are reserved to stencildent.

                          TERMINOLOGIES IN PRECLINICAL                                  CONSERVATIVE AND ENDONDONTICS    GLOSSORY OF TERMS AVAILABLE :  1)  OPERATIVE DENTISTRY 2) DENTAL CARIES 3) TOOTH PREPARATION  4) ENAMELOPLASTY 5) SIMPLE TOOTH PREPARATION 6) COMPOUND TOOTH PREPARATION 7) COMPLEX TOOTH PREPARATION 8) INTERNAL WALL 9) EXTERNAL WALL 10)  FLOOR OR SEAT 11) AXIAL WALL 12) PULPAL WALL 13) DENTINAL WALL 14) LINE ANGLE 15) POINT ANGLE 16)  CAVOSURFACE ANGLE 17)  CAVOSURFACE MARGIN  18)  BUTT JOINT 19 ) UNSUPPORTED ENAMEL 20)   MO CAVITY  21) MOD CAVITY 22) REVERSE CURVE 23) DOVETAIL 24 ) ISTHMUS 25) BOX ONLY TOOTH RESTORATION  26)TUNNEL TOOTH PREPARATION  27)BEVEL 28)CIRCUMFERENTIAL TIE  29)HYBRID LAYER 30) REMAINING DENTIN THICKNESS    THANKS FOR READING  NOTE: DOWNLOADING AND UPLOADING MY NOTES IS STRICTLY PROHIBITED AND SE

    VERTEBRAL ARTERY  Vertebral artery is principal artery that supplies  brain,spinal cord,meninges and i t has 4 parts.

                        "   BODY FLUIDS COMPOSITION"  Terms to know : ICF   ECF PLASMA  Average body water in female is 50%,male 60% body fluid composition is of 2 forms INTER CELLULAR AND EXTRA CELLULAR FLUID . NEED TO KNOW THIS? I know most of u dentist  would be wondering  why i had posted body composition ;but at doctors we definitely need to know  these basic terms and it percentage which is mandatory . hi my lovelies stencil dent family, please help me out by commenting down your valuable suggestion so that it would be helpful .                                             THANKS FOR WATCHING

    " INTERCELLULAR JUNCTION"  INTRODUCTION : Cell membrane of neighboring cells are connected with one other . There are 3 types of junction                                                 1) TIGHT                                                   2)ADHERANS                                                  3) GAP  1) T ight junction :  other name zona occuludens       They form a barrier to movement of ions and other solutes from one cell to another. 2)  Adherans :   other name zonula adherans. ·        There are   2 types of attachment –hemidesmosome and desmosome. 3) G ap junction: It helps in exchange of chemical messengers between the cells                          THANKS FOR WATCHING