This document discusses bone loss and patterns of bone destruction in periodontal disease. It describes the normal anatomy of alveolar bone and lists various factors that can influence bone morphology, including periodontal disease. These factors include the thickness of the interdental septa and alveolar plates. The document also lists causes of bone destruction such as plaque, trauma from occlusion, and systemic disorders like hyperparathyroidism. Finally, it discusses different patterns of bone destructive defects like horizontal bone loss, vertical defects, osseous craters, and furcation involvement.
Definition of periodontal pocket, classification, Histopathology of periodontal pocket, microflora involved, pathogenesis, periodontal pocket as a healing lesion, microtopography of root surface, treatment of periodontal pocket
this ppt depicts pattern of bone destruction. its a very good slide show showing the process of bone formation, bone destruction and their patterns in periodontal diseases.
Definition of periodontal pocket, classification, Histopathology of periodontal pocket, microflora involved, pathogenesis, periodontal pocket as a healing lesion, microtopography of root surface, treatment of periodontal pocket
this ppt depicts pattern of bone destruction. its a very good slide show showing the process of bone formation, bone destruction and their patterns in periodontal diseases.
Bone grafts in periodontal therapy
Presenter:
Dr. Rebicca Ranjit
Lecturer
Dept. of Periodontology & Oral Implantology
Historical Review:
In orthopaedics, bone grafts have been used for years.
Beuke and Silver, 1936 used boiled cow bone powder to successfully repair intrabony defects in humans.
Melcher, 1962 used anorganic bone (bovine bone) which were followed for 3 years.
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Bone loss & patterns of bone loss / /certified fixed orthodontic courses by I...Indian dental academy
Welcome to Indian Dental Academy
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 has a unique training program & curriculum that provides students with exceptional clinical skills and enabling them to return to their office with high level confidence and start treating patients
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Fibro-osseous lesions of the jaws
Fibrous dysplasia
Cemento-osseous dysplasia
Focal cemento-osseous dysplasia
Periapical cemento-osseous dysplasia
Florid cemento-osseous dysplasia
Ossifying fibroma
Juvenile aggressive ossifying fibroma
Cherubism
Fibro-osseous lesions (FOL) are characterized by replacement of normal bone architecture by collagen fibers and fibroblasts containing calcified tissue.
They include a wide variety of lesions of developmental, dysplastic and neoplastic origins with clinical and radiographic presentation and behavior.
Because of the histological similarities between diverse diseases, proper diagnosis requires correlation of history, clinical and radiographic findings.Fibrous Dysplasia
2. Reactive (dysplastic lesions arising in the tooth-bearing area (presumably of periodontal origin).
a. Periapical cemento-osseous dysplasia
b. Focal cemento-osseous dysplasia
c. Florid cemento-osseous dysplasia
3. Fibro-osseous neoplasms (widely designated as cementifying fibroma, ossifying fibroma or cemento-ossifying fibroma.Bone dysplasias
a. Fibrous dyspla i. Monostoticii. Polyostotic
iii. Polyostotic with endocrinopathy (McCune-Albright)
iv Osteofibrous dysplasia
b. Osteitis deformansc. Pagetoid heritable bone dysplasias of childhood
d. Segmental odontomaxillary dysplasia
2. Cemento-osseous dysplasias
a. Focal cemento-osseous dysplasia b. Florid cemento-osseous dysplasia
3.Inflammatory/reactive processes
a. Focal sclerosing osteomyelitisb. Diffuse sclerosing osteomyelitis
c. Proliferative periostitis
4. Metabolic Disease: hyperparathyroidism
5. Neoplastic lesions (Ossifying fibromas)
a. Ossifying fibromab. Hyperparathyroidism jaw lesion syndrome
c. Juvenile ossifying fibroma i. Trabecular typeii. Psammomatoid type
d. Gigantiform cementomas
Bone loss and patterns of bone destructionvidushiKhanna1
- introduction
- bone resorption
- factors causing bone destruction in periodontal disease
-- destruction by extension of gingival inflammation
--- histopathology
--- pathways of spread of inflammation
--- radius of action
--- periods of destruction
---- mechanism of destruction
-- bone destruction caused by TFO
-- bone destruction caused by systemic disorders
- factors determining bone morphology in periodontal disease
-- normal variation of alveolar bone
-- exostosis
-- butressing bone formation
-- food impaction
-- agressive periodontitis
- patterns of bone destruction
-- horizontal bone loss
-- vertical or angular defects
-- osseous craters
-- bulbous bone contours
-- reversed architecture
-- ledges
- furcation involvement
-- classification
-conclusion
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The prostate is an exocrine gland of the male mammalian reproductive system
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Ethanol (CH3CH2OH), or beverage alcohol, is a two-carbon alcohol
that is rapidly distributed in the body and brain. Ethanol alters many
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is the oldest recreational drug and likely contributes to more morbidity,
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1. Dr Jaffar Raza Syed
Bone Loss and Patterns of Bone Destruction
Normal Anatomy Of Alveolar Bone
Bone Loss and Patterns of Bone Destruction
Normal Anatomy Of Alveolar Bone
Page 1
Bone Loss and Patterns of Bone Destruction
2. Dr Jaffar Raza Syed Page 2
Various Factors Determining Bone Morphology In Periodontal Disease
(i) Normal variation in alveolar bone
(ii) Exostoses
(iii) Trauma from occlusion
(iv) Buttressing bone formation
(v) Food impaction
(vi) Aggressive periodontitis
3. Dr Jaffar Raza Syed Page 3
Various Anatomic Features That Influence Bone Destructive
Patterns In Periodontal Disease.
(i) Thickness, width and crestal angulation of the interdental septa
(ii) Thickness of facial and lingual alveolar plates
(iii) Presence of fenestration and dehiscence
(iv) Alignment of teeth
(v) Proximity with another tooth surfaces
(vi) Root and root trunk anatomy
(vii) Root position within alveolar bone
4. Dr Jaffar Raza Syed Page 4
Various Causes Of Bone Destruction
(i) Extension of gingival inflammation
(ii) Trauma from occlusion
(iii) Systemic disorders.
Various Systemic Disorders Which Cause Bone Destruction
(i) Hyperparathyroidism
(ii) Leukemia
(iii) Langerhan’s cell histiocytosis
6. Dr Jaffar Raza Syed Page 6
Changes In The Bone Could Be As Follows:
Gingival inflammation
↓
Marrow spaces
↓
Replaced by leukocytes and fluid exudates, new blood vessels and proliferating
fibroblasts
↓
Increase in osteoclasts and mononuclear cells
↓
Thinning of bone trabeculae and enlargement of the marrow spaces
↓
Destruction of the bone and reduction in bone height
↓
Replacement of fatty bone marrow with the fibrous type
(around the resorption areas)
7. Dr Jaffar Raza Syed Page 7
various mechanisms of bone destruction
According to Hausmann, the various mechanisms of bone destruction
are:
(i) Direct action of plaque products on bone progenitor cells induces
the differentiation of these cells into osteoclasts.
(ii) Plaque products act directly on bone, destroying it through a
noncellular mechanism.
(iii) Plaque products stimulate gingival cells, causing them to release
mediators, which in turn induce bone progenitor cells to
differentiate into osteoclasts.
(iv) Plaque products causes gingival cells to release agents that can
act as cofactors in bone resorption.
(v) Plaque products causes gingival cells to release agents that destroy
bone by direct chemical action, without oseoclasts.
8. Dr Jaffar Raza Syed
Various Bone Destructive Patterns In Periodontal Disease
(i) Horizontal bone loss
(ii) Vertical/angular defects
Various Bone Destructive Patterns In Periodontal Disease
Page 8
9. Dr Jaffar Raza Syed
Osseous Defects
• One walled osseous defects
• Two walled osseous defects
• Three walled osseous defects
: only one bony wall is present
: two bony walls are present
: three bony walls are present
Page 9
nt
: three bony walls are present
10. Dr Jaffar Raza Syed
(iii) Osseous craters
They are concavities in the crest of the interdental bone
confined within the facial and lingual walls
They are concavities in the crest of the interdental bone
confined within the facial and lingual walls
Page 10
11. Dr Jaffar Raza Syed
(iv) Bulbous bony contours
caused by exostoses, adaptation
found more frequently in the maxilla than mandible
caused by exostoses, adaptation to function or buttressing bone formation.
more frequently in the maxilla than mandible
Page 11
to function or buttressing bone formation.
12. Dr Jaffar Raza Syed
(v) Reversed architecture
defects are produced by loss of interdental bone
plates without loss of radicular bone
(more common in maxilla)
loss of interdental bone, including the facial and lingual
without loss of radicular bone, thereby reversing the normal
Page 12
including the facial and lingual
, thereby reversing the normal architecture
13. Dr Jaffar Raza Syed
(vi) Ledges
They are plateau-like bone margins caused by resorption of
thickened bony plates.
like bone margins caused by resorption of
Page 13
15. Dr Jaffar Raza Syed Page 15
Bone Destruction in Periodontal Disease
• Bacteria mediated — LPS, lipoteichoic acid, lipoproteins and others.
• Host mediated — prostaglandins, leukotrienes, cytokines and others.
• Combination of both.
Diagnosis of Osseous Defects
a. Clinical examination — transgingival probing.
b. Radiographs — not very reliable, cannot reveal the extent of involvement
and presence/absence of bony walls.
c. Surgical exposure — during flap operations, it is the only reliable method
for determining the true architecture of a bony defect