Laser in oral and maxilbfacial surgery
•Download as PPT, PDF•
11 likes•1,193 views
Laser in oral and maxilbfacial surgery
Recommended
More Related Content
What's hot
What's hot (20)
Similar to Laser in oral and maxilbfacial surgery
Similar to Laser in oral and maxilbfacial surgery (20)
More from Muthenna Rajab
Recently uploaded
Recently uploaded (20)
Laser in oral and maxilbfacial surgery
- 1. Lasers in Oral and Maxillofacial Surgery
- 2. LASERLASER Light Amplification by The Stimulated Emission of Radiation Properties: • Monochromaticity • Directionality • Brightness • Coherence
- 4. Laser Tissue InteractionLaser Tissue Interaction
- 5. Laser Effect on BiologicalLaser Effect on Biological TissuesTissues PhotothermalPhotothermal PhotochemicalPhotochemical PhotocoagulationPhotocoagulation PhotovaporizationPhotovaporization PhotocarbonizationPhotocarbonization PhotoablationPhotoablation Photodynamic actionPhotodynamic action Plasma FormationPlasma Formation
- 6. Lasers in DentistryLasers in Dentistry Application Er:YAG CO2 Ho:YAG Diod Excimer Nd:YAG Ar+ Diagnosis + Oral Surgery + + + + + + Maxillofacial Surgery + + Periodontics + + + + + + Operative Dentistry + + + + + + + Endodontics + + + + + + + Preventive Dentistry + + + Sterilization + + Bleaching + +
- 7. Effect of Temperature on Tissue <43 Biostimulation 45 Cell Mortality if Sustained Change in cell Conformation 50 Reduced Enzyme Activity 52 Oedema, Enzyme Changes 60 Protein Denaturation, Coagulation 80 Cell Membrane Permeability Collagen Denaturation 100 >100 Vaporization and Ablation Tissue Carbonization
- 8. Delivery Systems • Direct • Articulated Arm • Fiber Optic • Waveguides • Scanners
- 9. Surgical technique Non contact tech. Contact tech.
- 10. Indications for Treatment • Incision • Excision • Ablation • Photodynamic Therapy
- 11. Advantages of Laser Surgery • Haemostasis • Accuracy • Rapid healing • Reduced inflammation • Lack of scar tissue formation • Low level of discomfort
- 12. Disadvantages of Laser Surgery • Technical difficulties • Lack of precision in depth of cut • Tissue not available for histopathology • Hazardous • Dispersal of viable virus particles in the plume
- 13. Oral surgical applications 1. White patches and premalignant lesions 2. Erythroplakia and premalignant leukoplakia 3. Erosive lichen planus 4. Denture-induced hyperplasia 5. Squamous cell carcinoma 6. Other lesions
- 14. White patches and premalignant lesions •Nutritional deficiencies such as iron or vitamin B12 should be treated. Patients must be strongly advised to give up smoking. • If lesions do not respond and excision is required, the CO2 laser is a good option.
- 15. Erythroplakia and premalignant leukoplakia • Mildly dysplastic superficial lesions can be treated by ablation. • Severely dysplastic lesions need a deeper excision and it is then advisable to use the laser as a knife so that the whole lesion can be sent for histopathology.
- 16. Erosive lichen planus • Erosive lichen planus that does not respond to any other treatment is occasionally treated by laser with some success, but this is best considered as a last resort kept for patients with severe symptoms.
- 17. Denture-induced hyperplasia • This is a common condition that is very suitable for laser treatment, especially if it is extensive. • The denture should be adjusted and left out as much as possible for several weeks so that extent of surgery can be decided.
- 18. Squamous cell carcinoma • Small tumors in the floor mouth can be completely resected with a wide margin.
- 19. Other lesions • The submandibular ducts can be divided with little chance of postoperative salivary obstruction. • Small tongue lesions can be excised with the laser alone, except that larger blood vessels can be troublesome.
- 20. Removal of a fibrous lesion
- 21. Laser Safety •Awareness of hazard •Eye protection •Patient protection •Staff protection