Related Experiment Video
Updated: May 31, 2026

04:11
The Establishment of a Murine Maxillary Orthodontic Model
Published on: October 27, 2023
[A long-term 3D cast model analysis focusing bone-borne vs. tooth-borne SARME].
Summary
Bone-borne (BB) devices offer greater maxillary expansion than tooth-borne (TB) devices, but may cause more attachment loss. New designs could minimize these side effects for better orthodontic outcomes.
Area of Science:
- Orthodontics
- Dental Biomaterials
Context:
- Maxillary transverse deficiency is a common clinical concern.
- Orthodontic expansion aims to correct this, with various device types available.
Purpose:
- To compare the long-term skeletal and dental effects of tooth-borne (TB) versus bone-borne (BB) maxillary expansion devices.
Summary:
- This retrospective study analyzed 34 patients ~20.5 months post-expansion using 3D models. Bone-borne devices achieved greater, symmetric transverse widening but resulted in more attachment loss and tipping, particularly in anterior teeth and premolars. Tooth-borne devices showed asymmetric widening with less attachment loss, primarily affecting first premolars.
Impact:
- Bone-borne devices are suitable for significant maxillary expansion, while improved designs may mitigate associated periodontal issues. Tooth-borne devices offer a gentler expansion with better periodontal health, but require careful consideration for larger expansion distances.
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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.
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.
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.
Bone Structure
Within the skeletal system, the structure of a bone, or osseous tissue, can be exemplified in a long bone, like the femur, where there are two types of osseous tissue: cortical and cancellous.

