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©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in.

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Presentation on theme: "©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in."— Presentation transcript:

1 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Basic Chairside Instruments and Tray Systems Chapter 18

2 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Basic Structural Parts of Dental Hand Instruments Working end Shank Handle © Cengage Learning 2013

3 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Basic Classification of Dental Instruments Number of working ends Functions Manufacturer’s number Black’s formula

4 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Classification of Instruments Black’s three-number formula –First number Width of blade –Second number Length of blade –Third number Angle of blade © Cengage Learning 2013

5 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Classification of Instruments Black’s four-number formula –First number Width of blade –Second number Degree of angle of cutting edge of blade to handle © Cengage Learning 2013

6 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Classification of Instruments Black’s four-number formula –Third number Length of blade –Fourth number Angle of blade to axis of handle © Cengage Learning 2013

7 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Dental Check What is the end of the working end called if it is blunt and serrated? –Nib

8 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Cutting Instruments Chisels –Straight –Wedelstaedt –Bi-angle © Cengage Learning 2013

9 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Cutting Instruments Hatchets –Beveled on one side –Blade on one side –Refines cavity walls –Obtain retention in cavity prep © Cengage Learning 2013

10 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Cutting Instruments Hoes –Smoothes and shapes floor of cavity prep © Cengage Learning 2013

11 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Cutting Instruments Gingival margin trimmers –Curved blade –Angled cutting edge –Bevel gingival margin wall of cavity prep Distal Mesial © Cengage Learning 2013

12 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Cutting Instruments Angle formers –Define point angles –Sharpen line angles © Cengage Learning 2013

13 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Cutting Instruments Excavators –Blade or spoon –Removal of carious materials –Removal of excess cement –Tucking of rubber dam –Packing of retraction cord Blade Spoon © Cengage Learning 2013

14 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Dental Check Name the cutting instrument that is used to plane and shape enamel and dentin walls. –Chisel

15 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Noncutting Instruments Basic examination instruments –Mouth mirrors –Explorers –Cotton pliers –Periodontal probes Mirror and explorer Courtesy of Integra Life Sciences Corporation (through Integra Miltex)

16 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Noncutting Instruments Plastic filling instruments –Placing and condensing restorative materials Composite instrument –Placing, condensing, carving, contouring, and burnishing © Cengage Learning 2013

17 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Noncutting Instruments Composite instruments Amalgam carriers Amalgam condensers Carvers

18 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Noncutting Instruments Amalgam carrier –Carry and dispense amalgam Amalgam condenser –Pack amalgam into cavity prep Courtesy of Integra Life Sciences Corporation (through Integra Miltex) Courtesy of Hu-Friedy Mfg., Co., Inc.

19 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Noncutting Instruments Carver –Remove excess restorative material –Carve wax inlays and onlays Courtesy of Hu-Friedy Mfg., Co. Inc.

20 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Noncutting Instruments Burnishers –Smooth restorations –Shape matrix bands © Cengage Learning 2013

21 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Noncutting Instruments Files –Trim filling material Finishing knife –Trim excess material Courtesy of Hu-Friedy Mfg., Co. Inc. © Cengage Learning 2013

22 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Noncutting Instruments Miscellaneous –Spatulas –Articulating forceps –Scissors Courtesy of Integra Life Sciences Corporation (through Integra Miltex)

23 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Care and Maintenance Extend lifespan of instrument due to proper care and maintenance Properly clean and sterilize Examine all instruments thoroughly

24 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Dental Check Which type of burnisher is popular for smoothing amalgam or composite restorations? –Acorn

25 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Dental Rotary Instruments Parts of bur –Shank –Neck –Head Straight shank Latch-type shank Friction-grip shank Head Neck Shank © Cengage Learning 2013

26 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Types of Burs Cutting Diamond Finishing Surgical Laboratory Fissurectomy © Cengage Learning 2013

27 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Abrasives Nonbladed instruments used to finish and polish restorations and appliances Categorized by shape and materials from which they are made –E.g., rubber, stone, sandpaper

28 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Types and Functions of Abrasives Mandrels –Rods of various lengths used in low-speed handpieces Discs –Used to polish, smooth, and adjust restorative materials and dental appliances

29 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Types and Functions of Abrasives Stones –Used for cutting, polishing, and finishing amalgam, gold, composite, and porcelain restorations

30 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Types and Functions of Abrasives Rubber wheels –Used for finishing and polishing Rubber points –Used for polishing –Adaptable for defining anatomy in restoration © Cengage Learning 2013

31 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Dental Check What type of bur is used to open the cavity and remove the carious tooth structure? –Round

32 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Dental Handpieces Used for the following: –Remove dental decay –Prepare tooth for restoration –Polish –Polish and finish dental restorations –Cut, finish, and polish dental appliances –Trim models and trays

33 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Parts of the Dental Handpiece Working end –Head Shank Connection end

34 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Dental Handpieces High-speed Low-speed Electric © Cengage Learning 2013

35 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Maintenance and Sterilization of Dental Handpieces Maintenance –Follow manufacturer’s directions carefully Sterilization

36 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Air Abrasion Unit and Microetcher Air abrasion –Reduces use of anesthetics and drilling with dental handpieces Microetcher –Smaller version of air abrasion unit used for intraoral sandblasting and dentin bonding

37 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Tray Systems Preset tray system –Most commonly used –Instruments and auxiliary items –Placed on tray in order of use during procedure Other systems

38 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Color Coding Systems Color coding may be set up to indicate: –Procedures –Treatment room instruments storage –Additional sets of instruments –Individual operators –Sequence of use –Any combination of the above

39 ©2013 Delmar, Cengage Learning. All Rights Reserved. May not be scanned, copied, duplicated, or posted to a publicly accessible website, in whole or in part. Color Coding Systems © Cengage Learning 2013


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