Buttressing Bone Formation Quiz

Questions and Answers

What is the primary purpose of buttressing bone formation?

To enhance aesthetic appearance

To increase bone density

To reduce tissue inflammation

To support weakened bony trabeculae (correct)

Which of the following best describes 'central buttressing bone'?

Bone thickening occurring on external surfaces

Bone formation within the jaw structure (correct)

Bone loss due to resorption

Formation of bone nodules on the palate

Which type of bony contoured formation is referred to as 'Lipping'?

Internal bone resorption signs

Outgrowths of bone

Thickened bony plates

Bulging of bone contours due to peripheral formation (correct)

What percentage of human skulls demonstrate the presence of palatal exostoses?

40% Signup and view all the answers

What classification does 'buccal exostoses' primarily fall under?

Exostoses Signup and view all the answers

In the context of osseous defect classification, what is a ledge?

A plateau-like bone margin Signup and view all the answers

What percentage of individuals exhibit buccal exostoses?

77% Signup and view all the answers

Who first proposed the concept of buttressing bone formation due to occlusion trauma?

Glickman and Smulow Signup and view all the answers

Which of the following terms refers to bone formation on the external surface?

Peripheral buttressing bone Signup and view all the answers

What is a defining characteristic of exostoses?

Outgrowths of bone of varied size and shape Signup and view all the answers

What defines a fenestration in dental terms?

Isolated denudation of bone over the root surface Signup and view all the answers

Which factor is NOT typically associated with dehiscence?

Complete loss of the radial bone Signup and view all the answers

Which osseous defect classification is most common in the posterior maxillary region?

Reversed architecture defects Signup and view all the answers

Which characteristic is essential to understand exostoses?

Consist of bone fragments and can be removed surgically Signup and view all the answers

What is the key difference between suprabony and infrabony defects?

Infrabony defects involve loss of supporting bone around the root Signup and view all the answers

Which type of osseous crater does NOT occur due to the loss of interdental bone?

Horizontal crater Signup and view all the answers

Which of the following statements about buttressing bone formation is incorrect?

It occurs only in response to trauma or injury Signup and view all the answers

When might a periodontal surgeon find a dehiscence?

Where root contours are prominent Signup and view all the answers

What is a significant characteristic of reversed architecture defects?

They do not involve any loss of radicular bone Signup and view all the answers

What type of defects do fenestrations typically cause in periodontal surgery outcomes?

May complicate the surgical outcome Signup and view all the answers

What percentage of all teeth are affected by alveolar margin lippings in exostoses?

18% Signup and view all the answers

Which type of exostosis is more commonly associated with a higher percentage of individuals?

Lingual exostoses Signup and view all the answers

What is a characteristic feature of buccal exostoses?

They contribute to periodontal conditions. Signup and view all the answers

What is a potential cause of exostoses suggested by postulated theories?

A combination of genetic, environmental factors, and masticatory hyper function. Signup and view all the answers

What histological feature is primarily associated with exostoses?

Mature hyperplastic bone. Signup and view all the answers

Which of the following statements about palatal tori is true?

The prevalence of palatal tori ranges from 9% to 60%. Signup and view all the answers

What surgical technique is involved in the removal of the torus palatinus?

Mucoperiosteal flaps retraction. Signup and view all the answers

What is the prevalence rate for torus formation among adults?

27 per 1,000 adults. Signup and view all the answers

What features differentiate exostoses from tori?

Exostoses can appear as various lippings or growths. Signup and view all the answers

Which classification system identifies osseous defects as suprabony and infrabony defects?

Panos & Toneiti Signup and view all the answers

What characterizes infrabony defects according to Panos & Toneiti's classification?

Includes 1 walled, 2 walled, and 3 walled defects Signup and view all the answers

Which type of osseous crater is defined as having a depth of 5 mm or more?

Deep crater Signup and view all the answers

What is the estimated percentage of osseous craters that occur in the mandibular region?

66% Signup and view all the answers

Which feature is characteristic of the interdental area prone to craters formation?

Collects plaque and is difficult to clean Signup and view all the answers

According to Ochsenbein, what defines a shallow crater?

1-2 mm depth Signup and view all the answers

What type of defect is categorized as a furcation involvement?

Interradicular defect Signup and view all the answers

Which type of bone defect is known to always be above the alveolar crest?

Suprabony defect Signup and view all the answers

What classification is used to identify vertical classifications of furcation involvement?

Class I, II, III Signup and view all the answers

What is the main role of the vascular pattern in craters formation?

It serves as a pathway for inflammation. Signup and view all the answers

Buttressing bone formation occurs only in response to light occlusal forces.

False Signup and view all the answers

Peripheral buttressing bone formation refers to changes occurring within the jaw.

False Signup and view all the answers

Buccal exostoses are present in approximately 77% of all individuals.

True Signup and view all the answers

Ledges are defined as enlargements of bone that project outward.

False Signup and view all the answers

The concept of buttressing bone formation was first proposed in 1985.

False Signup and view all the answers

Exostoses are uniform in size and shape across all individuals.

False Signup and view all the answers

The presence of marginal bony lippings is an indication of underlying osseous changes.

True Signup and view all the answers

Osseous craters are defined as having a depth less than 5 mm.

False Signup and view all the answers

Suprabony defects are always located above the alveolar crest.

True Signup and view all the answers

Infrabony defects occur when there is a loss of interdental bone.

True Signup and view all the answers

Suprabony defects are classified as defects that occur above the alveolar crest.

True Signup and view all the answers

According to Panos & Toneiti's classification, infrabony defects are further categorized into three types based on the number of walls.

True Signup and view all the answers

Osseous craters can make up nearly half of all osseous defects but account for only a small percentage of mandibular defects.

False Signup and view all the answers

Ochsenbein divided bony craters into types based solely on their width.

False Signup and view all the answers

Horizontal classification of furcation involvement includes Class I, Class II, and Class III.

True Signup and view all the answers

The interdental bone's shape contributes significantly to the ease or difficulty of maintaining oral hygiene.

True Signup and view all the answers

Craters are less prevalent in posterior segments compared to anterior segments.

False Signup and view all the answers

Exostoses are formed solely due to regions of bone trauma without any other contributing factors.

False Signup and view all the answers

Deep craters are defined as having a depth of 5 mm or more.

True Signup and view all the answers

Vertical classification of furcation involvement includes parameters such as the degree of bone loss.

True Signup and view all the answers

Fenestrations are characterized by denuded areas where the root surface is covered only by periosteum and overlying gingiva.

True Signup and view all the answers

Reversed architecture defects result from the loss of both facial and lingual bone plates simultaneously.

False Signup and view all the answers

Dehiscences are typically more common in posterior teeth than in anterior teeth.

False Signup and view all the answers

The occurrence of fenestrations and dehiscences complicates the outcome of periodontal surgery.

True Signup and view all the answers

Exostoses are often associated with significant bone loss and lead to major structural changes in the oral cavity.

False Signup and view all the answers

Bone plate thickness is a predisposing factor for the occurrence of funnel-shaped defects.

False Signup and view all the answers

Approximately 20% of teeth are affected by fenestrations and dehiscences.

True Signup and view all the answers

Surgical removal of the torus mandibularis typically requires the use of a mono-bevel chisel for effective exostosis removal.

True Signup and view all the answers

Buccal exostoses occur more frequently than palatal exostoses in the human population.

True Signup and view all the answers

The primary function of buttressing bone formation is to prevent occlusion trauma.

False Signup and view all the answers

Buccal exostoses are known to have malignant potential.

False Signup and view all the answers

The prevalence rate for tori formation is higher in males than in females.

False Signup and view all the answers

Exostoses can only occur in the maxillary arch and not in the mandibular arch.

False Signup and view all the answers

Multiple exostoses can appear as several bony overgrowths on the vestibular alveolar bone.

True Signup and view all the answers

Lingual exostoses are observed in about 50% of all individuals.

True Signup and view all the answers

Histologically, exostoses are defined as immature dysplastic bone.

False Signup and view all the answers

Alveolar margin lippings are found in 18% of all teeth.

True Signup and view all the answers

The etiology of exostoses is widely agreed upon in the scientific community.

False Signup and view all the answers

Tori are more frequently observed in the maxillary arch than in the mandible.

True Signup and view all the answers

A surgical incision for torus palatinus removal is typically made along the midline of the palate.

True Signup and view all the answers

Study Notes

Buttressing Bone Formation

Development of thickened buccal alveolar bone occurs due to heavy occlusal forces.
Buccal alveolar bone enlargements found in 25% of all teeth examined.
Marginal bony lippings account for 18% of cases, while 7% demonstrate buccal exostoses.
Initially proposed by Glickman and Smulow in 1965 as a response to occlusal trauma.
Central buttressing bone forms within the jaw, peripheral buttressing occurs on the external surface, leading to bulging bone contours known as “Lipping”.

Bulbous Bone Contour

Ledges represent plateau-like bone margins resulting from resorption of thickened bony plates.

Exostoses

Exostoses are bone outgrowths of various sizes and shapes.
Palatal exostoses prevalence is found in 40% of human skulls.
Buccal exostoses seen in 25% of all teeth and 77% of individuals.
Removal typically performed using a mono-bevel chisel and smoothing with a bone bur.

Fenestrations and Dehiscences

Fenestrations are isolated areas where roots are denuded of bone but covered by periosteum and gingiva.
Dehiscence extends the denuded area through the marginal bone, considered a more serious defect.
Occur more frequently on facial bone than lingual surfaces, especially common in anterior teeth and often bilateral.
Important for periodontal surgery outcomes, occurring approximately in 20% of teeth.
Predisposing factors include prominent root contours, malpositions, and thin bony plates.

Reversed Architecture

Loss of interdental bone alters normal architecture without loss of radicular bone.
More prevalent in maxillae rather than mandibles.

Bone Deformities Classifications

Classifications identified by Goldman & Cohen (1958), Glickman (1964), Karn et al (1983), Prichards (1985), and others including the Panos & Toneiti (2000) classification.

Osseous Craters

Concave defects confined to the facial and lingual walls in interdental bones, constituting about one-third of all defects and two-thirds of mandibular defects.
Occurrence is more common in posterior segments than in anterior segments.
Ochsenbein's crater classification designates shallow (1-2 mm), medium (3-4 mm), and deep (5 mm or more) types.

Exostoses Etiology and Histology

Etiology remains undetermined; potential causes include genetic, environmental factors, and masticatory hyperfunction.
Histologically, exostoses display mature hyperplastic bone with cortical and trabecular characteristics.
Usually are painless, self-limiting, and can contribute to periodontal conditions.

Tori

Palatal tori mostly under 2 cm and prevalence ranges from 9% to 60%, more common than mandibular tori (5% to 40%).
Prevalence rate for tori is 27 per 1,000 adults, with higher occurrence in females.

Surgical Techniques

Removal procedures include an incision along the midline of the palate and mucoperiosteal flaps to access the exostosis.
Treated by sectioning into smaller parts, using a fissure bur for effective excision.

Buttressing Bone Formation

Development of thickened buccal alveolar bone occurs due to heavy occlusal forces.
Buccal alveolar bone enlargements found in 25% of all teeth examined.
Marginal bony lippings account for 18% of cases, while 7% demonstrate buccal exostoses.
Initially proposed by Glickman and Smulow in 1965 as a response to occlusal trauma.
Central buttressing bone forms within the jaw, peripheral buttressing occurs on the external surface, leading to bulging bone contours known as “Lipping”.

Bulbous Bone Contour

Ledges represent plateau-like bone margins resulting from resorption of thickened bony plates.

Exostoses

Exostoses are bone outgrowths of various sizes and shapes.
Palatal exostoses prevalence is found in 40% of human skulls.
Buccal exostoses seen in 25% of all teeth and 77% of individuals.
Removal typically performed using a mono-bevel chisel and smoothing with a bone bur.

Fenestrations and Dehiscences

Fenestrations are isolated areas where roots are denuded of bone but covered by periosteum and gingiva.
Dehiscence extends the denuded area through the marginal bone, considered a more serious defect.
Occur more frequently on facial bone than lingual surfaces, especially common in anterior teeth and often bilateral.
Important for periodontal surgery outcomes, occurring approximately in 20% of teeth.
Predisposing factors include prominent root contours, malpositions, and thin bony plates.

Reversed Architecture

Loss of interdental bone alters normal architecture without loss of radicular bone.
More prevalent in maxillae rather than mandibles.

Bone Deformities Classifications

Classifications identified by Goldman & Cohen (1958), Glickman (1964), Karn et al (1983), Prichards (1985), and others including the Panos & Toneiti (2000) classification.

Osseous Craters

Concave defects confined to the facial and lingual walls in interdental bones, constituting about one-third of all defects and two-thirds of mandibular defects.
Occurrence is more common in posterior segments than in anterior segments.
Ochsenbein's crater classification designates shallow (1-2 mm), medium (3-4 mm), and deep (5 mm or more) types.

Exostoses Etiology and Histology

Etiology remains undetermined; potential causes include genetic, environmental factors, and masticatory hyperfunction.
Histologically, exostoses display mature hyperplastic bone with cortical and trabecular characteristics.
Usually are painless, self-limiting, and can contribute to periodontal conditions.

Tori

Palatal tori mostly under 2 cm and prevalence ranges from 9% to 60%, more common than mandibular tori (5% to 40%).
Prevalence rate for tori is 27 per 1,000 adults, with higher occurrence in females.

Surgical Techniques

Removal procedures include an incision along the midline of the palate and mucoperiosteal flaps to access the exostosis.
Treated by sectioning into smaller parts, using a fissure bur for effective excision.

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Description

Test your knowledge on buttressing bone formation and its impact on buccal alveolar bone. This quiz covers key concepts related to the development of thickened bone in response to occlusal forces. Explore important findings and statistics relevant to dental studies.