Instrument Design & Recognition

Instrument Design & Recognition Foundations of Clinical Skills & Practice Sarah Balian Intended Learning Outcomes By the end of the session students should be able to: Identify three basic parts of a periodontal instrument and their variations Identify function, in relation to the design of...

Instrument Design & Recognition Foundations of Clinical Skills & Practice Sarah Balian Intended Learning Outcomes By the end of the session students should be able to: Identify three basic parts of a periodontal instrument and their variations Identify function, in relation to the design of the instrument shank Explain the macro and micro design and function of the working end Categorise design features of hand scaling instruments contributing to their functionality Explain the classification of hand scaling instruments (by both name and number) Tools of your trade Image Axminster Tools Feb 2021 Image Medgadget Tools Feb 2021 Three Basic Parts Working Shank Handle Shank Working End End Handle Handle Evenly weighted Clinician Ergonomic Weight Textures Flexibility Rigidity preference Image Swallow Dental Tools Feb 2021 Image Todays RDH Dental Tools Feb 2021 Image Dentsply Sirona Feb 2021 Image DZW Feb 2021 Shanks  Shanks Functional Shank Lower Terminal Shank Diagram Extends Bent form 1st section of bend shank (nearest nearest handle) up working to working end end Different Shanks- Simple & Complex Simple Complex Variability in Shanks Standard & Extended Flexibility Rigidity Shanks Thinner Larger in diameter Enhance tactile sensitivity Withstand pressure to remove heavy calculus Can be considered less traumatic Image Dimensions of DH 2021 Working End Working End Sickle Curette Image Health U Feb 2021 Image UCLH Feb 2021 Working End Micro-anatomy Working Anatomy Working End Micro-anatomy Face Lateral surface Cutting edge Toe/Tip Middle Heel Image Lippincott Williams & Wilkins 2021  Micro-anatomy of Image Lippincott Williams & Wilkins 2021 working end Working end Curette Toe Middle Heel Image Lippincott Williams & Wilkins 2021 Working End Sickle Tip Middle Heel Image Lippincott Williams & Wilkins 2021 Image UCLH Feb 2021 Cross Section Sickle Curette Image Lippincott Williams & Wilkins Image Lippincott Williams & Wilkins 2021 2021 Stamping Design Name Design Number Identifies school or designer Number designation when E.g. Gracey assigned with design name provides exact identification e.g. working-end Image UCLH Feb 2021  Periodontal Instruments Assessment Deposit removal Instruments instruments Periodontal Explorers Sickles Curettes Probes Periodontal Probes Round or Ros-shaped Smooth round rectangular in working end tip cross section Some designs Instrument of have millimetre measuring or markings evaluation Can you list its uses? Why is the rounded edge an advantage? Image UCLH Feb 2021 Varying presentations of Periodontal Probes Image from CDEWorld Feb 2021  Explorers Fine, wire-like Circular in cross Sharp point working end section Used to determine Used for evaluation the location and with maximum More flexible shank extent of calculus tactile conduction deposits Can you think of other uses? Image UCLH ODU Probe Feb 2021 Varying types of Periodontal Explorers Image Slideshare Feb 2021 Image UCLH ODU Probe Feb 2021 Sickle Scalers Sickle (M23) H6/H7 Cross Section Image UCLH Feb 2021 Image Quizlet 2021 Sickle Scalers Two cutting edges Cutting edges meet in pointed tip Pointed back Triangular in cross section Variety of sickles available Confined to supra-gingival (crown) use & should not be used on root surfaces Image UCLH Feb 2021 Say what you see…. Image UCLH Feb 2021 Sickle video Enamel D e n t i Gingivae n Universal Curettes Two cutting edges Spoon shaped working-end Cutting edges meet in rounded toe Rounded back Semi-circular in cross section Used both supra-gingivally & sub- gingivally for removal of light to moderately-sized calculus Features allow it to be inserted into the sulcus or pocket without trauma to the gingival tissue Look again Comparing working end of molars Video of Langer Curette and sickles Image UCLH Feb 2021 Universal Curette Cross section of Universal Curette Image Lippincott Williams & Wilkins 2021  Enamel Diagram of curette in dental pocket D e Research names of other n universal curettes t i Gingivae n e Image UCLH Feb 2021 Say what you see Image Pocket Dentistry Feb 2021 Site Specific Curette Rounded back Rounded toe Semi-circular in cross-section One working edge per working end Long complex shank design Can only be applied to specific surfaces & areas of the mouth A set of curettes would be needed to instrument a whole mouth Image UCLH Feb 2021 Should only be used sub-gingivally Blade Angles Image Cloudinary 2021 Research names of other site specific curettes After Fives Gracey Image Pearson Dental 2021 Image LM Dental 2021 Gracey 1/2 Image LM Dental 2021 Image UCLH Feb 2021 Gracey 1/2 Images from UCLH Feb 2021 Cutting Side Rounded Side Face Gracey 5/6 Rounded Side Cutting Side Gracey 9/10 Cutting Side Rounded Side Gracey 11/12 Rounded Side Cutting Side Gracey 13/14 Cutting Side Face  Welcome any thoughts / comments Do you have any experiences regarding instruments you can share? Instrument maintenance These tools require care and maintenance to be effective Refer to ergonomics lecture Refer to Sharpening Lecture Sharpening Stone Different types Require care Understand anatomy to understand usage of stones Refer to sharpening lecture