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Related Concept Videos

Structural Joints: Fibrous Joints01:03

Structural Joints: Fibrous Joints

Fibrous joints are a type of joint where the bones are connected by fibrous connective tissue. These joints provide stability and minimal to no movement between the articulating bones. There are three types of fibrous joints.
Suture
All the bones of the skull, except for the mandible, are joined to each other by a fibrous joint called a suture. The fibrous connective tissue found at a suture strongly unites the adjacent skull bones and thus helps to protect the brain and form the face. In...
Tooth Anatomy01:21

Tooth Anatomy

The human tooth enables us to eat a variety of foods, speak clearly, and even aid in shaping our faces. Teeth are composed of various elements that work together. Here's a detailed look at the anatomy of a human tooth.
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or grinding food.
Teeth01:15

Teeth

The formation of teeth, also known as odontogenesis, is a complex process that begins in utero, around the sixth week of embryonic development. There are three stages to this process: the bud stage, the cap stage, and the bell stage.
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin and...
Veneer01:19

Veneer

Veneer refers to a thin sheet of wood, typically produced to a thickness of about one-eighth of an inch or less. This material is crafted through various methods, the most common being rotary cutting. In this process, a log is mounted into a large lathe and spun against a knife edge, peeling off a continuous strip of wood as the knife penetrates deeper into the rotating log, creating a rotary-cut veneer.
Other veneering techniques include plain-slicing, quarter-slicing, and rift-slicing. These...
Sutures of the Skull01:22

Sutures of the Skull

The human skull is composed of several bones that come together to protect the brain and support the structures of the face. The junctions where these bones meet are called sutures.
Sutures are immobile joints between adjacent bones of the skull. The narrow gap between the bones is filled with dense, fibrous connective tissue that unites the bones. The long sutures located between the skull bones are not straight but instead follow irregular, tightly twisting paths. These twisting lines tightly...
Structural Joints: Cartilaginous Joints01:17

Structural Joints: Cartilaginous Joints

As the name indicates, at a cartilaginous joint, the adjacent bones are united by cartilage, a tough but flexible type of connective tissue. Unlike synovial joints, these types of joints lack a joint cavity and involve bones joined together by either hyaline cartilage or fibrocartilage.
There are two types of cartilaginous joints:
Synchondrosis
A synchondrosis ("joined by cartilage") is a cartilaginous joint where bones are connected by hyaline cartilage. Synchondrosis may be temporary or...

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Related Experiment Video

Updated: Jun 18, 2026

Lateral Molar Approach-Driven Transoral Endoscopic Procedure for Benign Infratemporal Fossa Tumor Resection
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Lateral Molar Approach-Driven Transoral Endoscopic Procedure for Benign Infratemporal Fossa Tumor Resection

Published on: August 15, 2025

[Bilateral tooth fusion].

A Bennani1, M F Zerouaoui, W El Wady

  • 1Faculté de médecine dentaire de Rabat, Rabat instituts, Madinat Al Irfane, BP 6212, 10 000 Rabat, Maroc. bennaniabdelkader@yahoo.fr <bennaniabdelkader@yahoo.fr>

Revue De Stomatologie Et De Chirurgie Maxillo-Faciale
|December 1, 2009
PubMed
Summary
This summary is machine-generated.

Tooth fusion, a rare dental anomaly, involves the joining of two teeth. While often having minimal impact, it can lead to complications requiring treatment.

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Lateral Molar Approach-Driven Transoral Endoscopic Procedure for Benign Infratemporal Fossa Tumor Resection
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Area of Science:

  • Dentistry
  • Oral Surgery
  • Developmental Biology

Background:

  • Tooth fusion is a rare developmental anomaly characterized by the union of two adjacent tooth germs.
  • This condition can occur unilaterally or bilaterally, with a higher prevalence in the maxilla.

Observation:

  • A case report details a 25-year-old male with bilateral maxillary tooth fusion involving teeth 11 and 21-22.
  • Radiographic examination revealed fused teeth with bifid crowns and single or diverging roots.

Findings:

  • The observed bilateral maxillary fusion presented with complex root and crown morphology.
  • No immediate esthetic or functional deficits were noted in the patient.

Implications:

  • While tooth fusion may have minimal initial impact, potential complications include periodontal disease, shortened dental arches, and delayed eruption.
  • Early detection and intervention, such as separating fused teeth, are crucial for restoring dental function and aesthetics.