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Related Concept Videos

Osteoclasts in Bone Remodeling01:31

Osteoclasts in Bone Remodeling

Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during bone...
Bone Disorders01:29

Bone Disorders

Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Bone Formation by Intramembranous Ossification01:29

Bone Formation by Intramembranous Ossification

Intramembranous ossification is one of the two processes involved in the development of bones within an embryo. The flat bones of the face, most of the cranial bones, and the clavicles are formed via this process. During intramembranous ossification, the bones develop directly from sheets of undifferentiated mesenchymal connective tissue.
The process begins when mesenchymal cells in the embryonic skeleton gather together and differentiate into osteogenic cells, which then develop into...
Fibril-associated Collagen01:11

Fibril-associated Collagen

Fibril-associated collagens are a type of collagens present in the extracellular matrix with interrupted triple helices or FACIT (Fibril-associated collagens interrupted triple-helices). FACIT help connect and attach the collagen fibrils with each other as well as with other proteins of the extracellular matrix.
For example, the type II collagen fibrils in cartilage have covalently bound type IX fibril-associated collagens at regular intervals. Other types of fibril-associated collagens are...
Porosity in Cement Paste01:18

Porosity in Cement Paste

The porosity of concrete is a measure of the void spaces within its structure. These spaces impact its strength and durability significantly. When water and cement interact, a chemical reaction called hydration creates a semi-solid paste. This paste includes combined water, making up approximately 23% of the cement's dry mass, and gel water, which fills minuscule voids known as gel pores, accounting for about 28% of the cement gel volume.
The balance of water to cement in the mix is critical—it...
Compact Bone01:27

Compact Bone

Most bones contain compact and spongy osseous tissue, but their distribution and concentration vary based on the bone's overall function.
Compact bone, also called cortical bone, is the denser, stronger of the two types of bone tissue. It is found under the periosteum and in the diaphyses of long bones, where it provides support and protection. The microscopic structural unit of compact bone is called an osteon, or haversian system. Each osteon is composed of concentric rings of calcified...

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Related Experiment Video

Updated: Jun 28, 2026

Isolation of Cells with Morphological and Spatial Information from Oral Submucous Fibrosis Samples by Laser Capture Microdissection
05:42

Isolation of Cells with Morphological and Spatial Information from Oral Submucous Fibrosis Samples by Laser Capture Microdissection

Published on: August 11, 2023

Cemento-ossifying fibroma--a rare case.

H G Sarwar1, M K Jindal, S S Ahmad

  • 1Department of Oral & Maxillofacial Surgery, Z. A. Dental College, A.M.U. Aligarh-202 002, India. sarwarhashmi@rediffmail.com

Journal of the Indian Society of Pedodontics and Preventive Dentistry
|October 17, 2008
PubMed
Summary

This case report details a rare fibro-osseous lesion in an 11-year-old male. The study highlights diagnostic challenges with cemento-ossifying fibroma, distinguishing it from ossifying fibroma.

Related Experiment Videos

Last Updated: Jun 28, 2026

Isolation of Cells with Morphological and Spatial Information from Oral Submucous Fibrosis Samples by Laser Capture Microdissection
05:42

Isolation of Cells with Morphological and Spatial Information from Oral Submucous Fibrosis Samples by Laser Capture Microdissection

Published on: August 11, 2023

Area of Science:

  • Oral and Maxillofacial Surgery
  • Pathology
  • Oncology

Background:

  • Fibro-osseous lesions encompass diverse bone pathologies, including fibrous dysplasia and ossifying fibroma.
  • Cemento-ossifying fibroma, an odontogenic neoplasm, presents diagnostic challenges due to terminology confusion.
  • Distinguishing cemento-ossifying fibroma (odontogenic origin) from ossifying fibroma (bony origin) is crucial for accurate diagnosis and treatment.

Observation:

  • A rare case of a fibro-osseous lesion is presented in an 11-year-old male.
  • The patient exhibited swelling in the maxillary anterior region.
  • Symptoms included difficulty in mouth closure and mastication.

Findings:

  • The case underscores the rarity of cemento-ossifying fibroma in the maxillary anterior region.
  • Diagnostic criteria for cemento-ossifying fibroma require careful consideration to differentiate from other fibro-osseous lesions.
  • The patient's presentation highlights the clinical impact of such lesions on oral functions.

Implications:

  • Accurate diagnosis of fibro-osseous lesions is essential for appropriate management and patient outcomes.
  • This case contributes to the understanding of rare cemento-ossifying fibroma presentations.
  • Further research into the specific origins and diagnostic markers of cemento-ossifying fibroma is warranted.