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Related Concept Videos

Bone Remodeling01:40

Bone Remodeling

Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
The Bone Matrix01:18

The Bone Matrix

Bone contains a relatively small number of cells entrenched in a matrix of collagen fibers that provide an adherent surface for inorganic salt crystals. Both components of the matrix, organic and inorganic, contribute to the unusual properties of bone. Without collagen, bones would be brittle and shatter easily. Without mineral crystals, bones would flex and provide little support. This can be observed by an experiment: when the minerals of a bone are dissolved by soaking the bone in acid or...
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...

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Related Experiment Video

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Effect of Alveolar Process and Basal Bone Features on Post-Extraction Dimensional Changes.

Emilio Couso-Queiruga1,2,3,4, Miguel Padial-Molina4,5, Pablo Galindo-Moreno4,5

  • 1PhD Program in Clinical Medicine and Public Health, University of Granada, Granada, Spain.

Journal of Clinical Periodontology
|November 30, 2025
PubMed
Summary

Specific anatomical features of the alveolar process significantly impact post-extraction bone dimensional changes. Thin facial bone and certain sagittal root positions increase bone remodelling and the need for bone augmentation.

Keywords:
alveolar bone lossbone resorptiondigital imaging/radiographyphenotypetooth extraction

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Area of Science:

  • Oral and Maxillofacial Surgery
  • Periodontology
  • Dental Implantology

Background:

  • Alveolar bone dimensional changes after tooth extraction are critical for successful dental implant placement.
  • Predicting and managing these changes requires understanding the influence of specific anatomical site characteristics.

Purpose of the Study:

  • To investigate the relationship between pre-extraction anatomical features of the alveolar process and basal bone and post-extraction dimensional alterations.
  • To assess the impact of these features on the need for ancillary bone augmentation (NBA).

Main Methods:

  • A cohort of 65 patients undergoing single maxillary non-molar tooth extraction was studied.
  • Baseline anatomical characteristics, including facial bone thickness (FBT) and sagittal root position (SRP) class, were recorded.
  • Linear and volumetric bone changes, along with NBA, were evaluated after a 14-week healing period.

Main Results:

  • Facial bone thickness (FBT) ≤ 1 mm was significantly associated with greater dimensional changes and higher NBA rates (88.46% vs. 35.13%).
  • Sites with roots outside the bony housing and narrower basal bone width showed significantly increased bone remodelling and NBA.
  • SRP Class IV exhibited the highest rates of bone remodelling and NBA (100%).

Conclusions:

  • Pre-extraction anatomical factors, such as FBT, root position, and basal bone width, significantly influence post-extraction alveolar ridge remodelling.
  • These site-specific features are crucial predictors for the need for ancillary bone augmentation in implant therapy planning.