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Int Poster J Dent Oral Med 14 (2012), No. 3     15. Sep. 2012

Int Poster J Dent Oral Med 2012, Vol 14 No 3, Poster 613

Optical Coherence Tomography

A New Era in Dental Imaging

Language: English
 

Authors:
Dr. Meghana H. C., Post Graduate Student, Dr. G. V. Pramod, MDS, Reader, Prof. Dr. Lingappa Ashok, MDS, HOD,
Bapuji Dental College and Hospital, Department of Oral Medicine and Radiology, Davangere, Karnataka, India

Date/Event/Venue:
17-19th December 2010
XXII National Conference, Indian Academy of Oral Medicine & Radiology,
New Delhi, India
 

Introduction

Optical coherence tomography (OCT) is a non invasive optical signal acquisition and processing method. It captures micrometer resolution cross sectional, 3 dimensional images, up to 1-2mm depth from within optical scattering media ( biological tissue).
 

Conclusions

Principle:
OCT is a low coherence interferometric technique, typically employing near infrared light.

 
Fig. 1: OCT is a low coherence interferometric technique, typically employing near infrared light
 
 

History:

Fig. 2: First applied by Dr. David Haung et al in ophthalmology in 1991 Fig. 3: OCT SCANNER (VIVOSIGHT)
Fig. 4: OCT Hand Held probe Fig. 5: Screening oral mucosa
Fig. 6: Instant chair side monitoring Fig. 7: Penetrating 1-2mm depth
Fig. 8 Fig. 9: Treatment planning
Fig. 10: Guiding surgical procedure
 
Fig. 11

Applications in Medicine
• Ophthalmology
• Gastroenterology
• Cardiology

Applications in Oral Medicine
• Early screening for precancerous lesions & oral cancer
• Imaging of tissue pathology

Applications in Conservative Dentistry & Endodontics
• Early detection of caries
• Evaluation of root canal anatomy
• Evaluation of fracture in restoration & tooth

Applications in Periodontics
• Assess periodontal disease

Advantages
• Instant, direct imaging of tissues morphology
• Live subsurface images at near microscopic resolution
• No ionizing radiation used

Disadvantages
• OCT scan quality is dependent on operator skill
• Tend to have a fairly shallow imaging penetration depth
• Expensive

Applications
Dentist viewing an OCT image for fractures & voids in composite restoration
Oct image showing early decalcification of tooth
Oct image showing root canal anatomy
Screening for oral cancer
OCT image showing moderate dysplasia of buccal mucosa
OCT SCANNER (VIVOSIGHT)
OCT Hand Held probe
Screening oral mucosa
Instant chair side monitoring
Penetrating 1-2mm depth
Treatment planning
Guiding surgical procedure

Fig. 12: Dentist viewing an OCT image for fractures & voids in composite restoration Fig. 13: Oct image showing early decalcification of tooth
Fig. 14: Oct image showing root canal anatomy Fig. 15: Screening for oral cancer
 
Fig. 16: OCT image showing moderate dysplasia of buccal mucosa
 
 

This Poster was submitted by Dr. Meghana H. C..
 

Correspondence address:
Dr. Meghana H. C.
Bapuji Dental College and Hospital
Department of Oral Medicine and Radiology
Davangere – 577 004
Karnataka, India