IJCRR - 7(21), November, 2015
ASSESSMENT OF BONY TRABECULAR PATTERNCHANGES SEEN IN GROWING SKELEAL CLASS-II MALOCCUSION TREATED WITH TWIN BLOCK THERAPY
Author: Shaharyar Ahmad, Ranjit H. Kamble, Sunita Shrivastav, Narendra Sharma, Ranjit Patil, Abhilasha Goyal
Purpose: The purpose of this study was to assess the bony trabecular pattern changes seen in growing skeletal class-II malocclusion treated with twin block therapy and comparison with non-treated group.
Material and Methods: Full mouth Periapical radiographs of patients were taken pre and post twin block therapy. Regions of interest (100×100 pixels) were located between apices of the teeth of the maxillary and mandibular anterior, premolar, and molar area. The fractal dimension (FD) was calculated by using the box counting method. The particle count (PC) and area fraction (AF) analyses were also performed.
Results: There was significant difference in the FD values among the different groups of age, gender, upper, and lower jaws. The p-value of FD-0.011, PC-0.001 and AF-0.002 showed significant results after post twin block therapy.
Conclusion: In this study pre-treatment radiographs showed irregular vertical arrangement of the spongy trabeculae running from the walls of the socket of one tooth or root to the next and also parallel to the long axis of tooth. Post-treatment radiograph showed a regular horizontal arrangement of spongiosa and dense trabeculation and perpendicular to long axis of tooth.
Keywords: Twin block therapy, Bony trabeculae, Skeletal class II, Fractal dimensions(FD)
Shaharyar Ahmad, Ranjit H. Kamble, Sunita Shrivastav, Narendra Sharma, Ranjit Patil, Abhilasha Goyal. ASSESSMENT OF BONY TRABECULAR PATTERNCHANGES SEEN IN GROWING SKELEAL CLASS-II MALOCCUSION TREATED WITH TWIN BLOCK THERAPY International Journal of Current Research and Review. 7(21), November, 59-65
1. Van Rietbergen B, Muller R, Ulrich D, Ruegsegger P, Huiskes R. Tissue stresses and strain in trabeculae of a canine proximal femur can be quantified from computer reconstructions. Journal of Biomechanics 1992 February; 32(2) : 165-173.
2. Lang P, Steiger P, Faulkner K, Gluer C, Genant HK. Osteoporosis. Current techniques and recent developments in quantitative bone densitometry.RadiolClin North Am 1991; 29:49-76.
3. Wolf J, Das Gesetz der Transformation der Knochen. Hirschwald A, Berlin ( Springer-Verlag published an excellent English translation of this monograph in 1986),1982.
4. Proffit WR, Fields HW. Contemporary Orthodontics. 3rd edition. St Louis, Mo: Mosby; 2000; 13: 96–98, 260–269, 481.
5. O’Brien K, Wright J, Conboy F. Effectiveness of early orthodontic treatment with the Twin-block appliance: a multicenter, randomized, controlled trial. Part 1: Dental and skeletal effects. Am J Orthod Dentofacial Orthop. 2003;124: 234–243
6. McNamara JA Jr, Brudon WL. Orthodontics and dentofacial orthopaedics. Ann Arbor: Needham Press; 2001. p. 67-80.
7. Baccetti T, McNamara JA. Treatment Timing for Twin block Therapy; (Am J Orthod Dentofacial Orthop 2000; 118:159-70)
8. Clark WJ. The twin-block traction technique.Eur J Orthod 1982; 4:129-38.
9. Jett S, Shrout MK, Mailhot JM, Potter BJ, Borke JL. An evaluation of the origin of trabecular bone patterns using visual and digital image analysis. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2004; 98: 598-604.
10. Parfitt AM. Trabecular bone architecture in the pathogenesis and prevention of fracture. Am J Med 1987; 82: 68-72.
11. White SC, Rudolph DJ. Alterations of the trabecular pattern of the jaws in patients with osteoporosis. Oral Surg Oral Med Oral Pathol Oral RadiolEndod 1999; 88: 628-35.
12. Amer ME, Min-Suk Heo, Brooks SL, Benavides E. Anatomical variations of trabecular bone structure in intraoral radiographsusing fractal and particles count analyses. Imaging Sci Dent 2012; 42 : 5-12.
13. Diane P, Grethe J, Stavros K. Assessment of trabecular pattern on periapical and panoramic radiographs: A pilot study. Acta Odontol Scand, 2010; 68: 91-97.
14. Yasar F, Akgünlü F. Fractal dimension and lacunarity analysis of dental radiographs. Dentomaxillofac Radiol 2005; 34 : 261-7.
15. Haire TJ, Hodgskinson R, Ganney PS, Langton CM. A comparison of porosity, fabric and fractal dimension as predictors of the Young’s modulus of equine cancellous bone. Med Eng Phys 1998; 20: 588-93.
16. Jolley L, Majumdar S, Kapila S. Technical factors in fractal analysis of periapical radiographs. Dentomaxillofac Radiol 2006; 35: 393-7.
17. Updegrave, William J. Normal Radiographic Anatomy. Dental Radiorraphy and Photography, December 1958: 57-65.
18. Nicholas Joseph Brescia. A Roengenographic Study of the Trabecular Pattern of the Alveolar Processes of the Human Maxilla and Mandible.Loyolauniversity, Chicago 1959.
19. Graber, Rakosi and Petrovic, Dentofacial Orthopaedics with Functional Appliances, 2nd Edition.
20. Laura E, Bollen AM, Robert ML, Susan WH, Jeremy BC, Curtis SK Chen, Lars GH et al. Trabecular and cortical bone as risk factors for orthodontic relapse. Am J Orthod Dentofacial Orthop 2006; 130:476-84