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Growth&dev iv /certified fixed orthodontic courses by Indian dental academy
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Growth&dev iv /certified fixed orthodontic courses by Indian dental academy

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The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.

Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078

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  • 1. Growth & Development Part IV INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com
  • 2. • Growth and development of Cranial Vault • Growth and development of Basicranium • Growth and Development of nasomaxiallary complex. www.indiandentalacademy.com
  • 3. Growth and development of Cranial Vault • The growth of the bones of the calvaria uitlizes a suture system plus relatively small surface deposits on both ectocranial and endocranial sides. • Remodelling adjustments are minor,primarily adjacent to sutures. www.indiandentalacademy.com
  • 4. • The growth of the skull is provided by sutural responses to the expansion of the enclosed brain,thus vault growth is paced by brain growth. • Since the brain growth is largely completed in early childhood, the cranial vault is one of the first regions to achieve full size. www.indiandentalacademy.com
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  • 6. • The sutural system is highly adaptive for such pathologies like Anacphaly or in situation of premature closure of sutures. www.indiandentalacademy.com
  • 7. Growth and development of Basicranium • The human cranial floor and calvaria are adapted to upright body posture and the development of relatively large cerebral hemispheres • Cranial base flexure places the foramen magnum directly over the vertical spinal cord and achieves a forward alignment of the face and orbits because of human bipedal posture.www.indiandentalacademy.com
  • 8. • The basicranium primarily grows by cartilagenous growth in the synchondrosis .There are four synchondrosis in the base of the skull • Spheno occipital • Spheno ethmoidal • Inter sphenoidal • Intra Occipital www.indiandentalacademy.com
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  • 10. Spheno occipital syn • The most important growth site at cranial base is the spheno occipital syn. It is situated between sphenoid and occipital bone. • It is active throughout the growing period and does not close until late adolesecence or early adult life. • The manner in which growth takes place here is similar to that of ephipysis of the bones. www.indiandentalacademy.com
  • 11. • The growth occurring at this syn. is directed upwards and forwards therefore it carries the upper part of the face and anterior half of the base of the cranium bodily upwards and forwards. • This upward and forward movement is compensated by the downward growth of face itself. www.indiandentalacademy.com
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  • 13. • The growth of the spheno occipital growth exists primarily to accommodate the growing brain and upper resp.tract. www.indiandentalacademy.com
  • 14. Spheno ethmoidal Syn. • It is the cartilage present between the spheniod and ethmoid bone.The growth at this syn. is complimented by the growth of cartilage between the mesethmoid bone and frontal bone. • Growth taking place at this suture is also equally important. www.indiandentalacademy.com
  • 15. • In addition to the growth of the synchondrosis,the frontal bone itself increases in thickness through pneumatization and creation of the frontal sinus. • This sutures closes around the age of 7. www.indiandentalacademy.com
  • 16. • Intra sphenoidal & Intra Occipital synchondrosis : • Activity at the intersphenoidal syn. disappears at birth.These closes between 3- 5 years of age. www.indiandentalacademy.com
  • 17. • The basicranium is generally considered to be the most stable of all portions of the craniofacial skeleton and least affected by such external influences as altered neuromuscular or function treatment. www.indiandentalacademy.com
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  • 19. Growth and Development of nasomaxiallary complex. • The naso maxillary complex provides a significant portion of the airway, contain the physiologically important nasal mucosae with their glands and temperature adjusting vascular components,separates nasal from oral cavities, houses the olfactory nerve endings, encloses the eyes,and adds resonance to the voice because of the sinuses contained within the region www.indiandentalacademy.com
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  • 21. • The mechanism for growth in the naso maxillary complex are the sutures,the nasal septum,the periosteal and endosteal surfaces and the alveolar process. • The maxilla is increased in size by periosteal activity during postnatal growth,although the periosteum has different names. www.indiandentalacademy.com
  • 22. • Periosteum, Mucoperiosteum, suture, periodontal membrane.Dispite the different names on different body surfaces but all carry out the same role of remodelling. www.indiandentalacademy.com
  • 23. • Some times too much emphasis is till placed on the nasal septum in midface growth suggesting almost a dominant role,however it must remembered that virtually all of the inner and outer surfaces undergo remodelling process. www.indiandentalacademy.com
  • 24. • Maxillary height: Apposition occurs on the floor of the orbits while remodelling resorption occurs on the lower surfaces. Simultanously the nasal floor is lowered by resorption while apposition of the oral side. Growth at the median suture results in increase width. www.indiandentalacademy.com
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  • 26. • Alveolar remodelling contributing to significant early growth is also important in the attainment of width because of the divergence of the alveolar processes. The maxillary alveolar height results in about 40% total height. www.indiandentalacademy.com
  • 27. • There is correlation between the growth in width at the median suture and the sutural growth contributing to height of the maxilla. • Mutual transverse rotation of the two maxilae results in separation of the halves more posteriorly than anteriorly www.indiandentalacademy.com
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  • 29. • Maxillary length: length increases in the maxilla after about the second year occur by apposition on the maxillary tuberosity and by sutural growth toward palatine bone. • Surface resorption occurs anteriorly on the maxiallry arch. www.indiandentalacademy.com
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  • 31. • Alveolar growth is well co ordinated with the eruption of the teeth.Increase in over all maxillary height coincide nicely with vertical growth of the mandible.There is some general pacing of overall maxillary and mandibular growth for both are roughly coincident with general body growth. www.indiandentalacademy.com
  • 32. • All mechanism of the naso maxillary growth is well adaptive and compensatory esp the alv. process e.g in skeletal deep bite cases or incase with increase vertical dimension of face. www.indiandentalacademy.com
  • 33. www.indiandentalacademy.com Thank you For more details please visit www.indiandentalacademy.com