Related Experiment Video
Updated: Jul 15, 2026
07:26
Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology
Published on: August 22, 2022
Histopathologic study of physiological and pathological resorptions in human primary teeth
Michele Bolan1, Maria José de Carvalho Rocha
1Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil. michelebolan@hotmail.com
Summary
Histological analysis revealed distinct differences between physiological and pathological tooth resorption. Pathological resorption in primary teeth showed pulpal alterations and bacteria, unlike normal physiological resorption.
Area of Science:
- Dentistry
- Oral Pathology
- Histology
Background:
- Tooth resorption is a complex biological process affecting primary teeth.
- Distinguishing between physiological and pathological resorption is crucial for diagnosis and treatment.
Purpose of the Study:
- To histologically characterize physiological and pathological resorption in primary teeth.
- To identify bacterial presence and pulpal/periradicular tissue conditions in both resorption types.
Main Methods:
- Optical microscopy was used for histological analysis of 60 primary teeth.
- Teeth were categorized into physiological (19) and pathological (41) resorption groups.
- Hematoxylin-eosin and Brown-Brenn staining techniques were employed to assess tissue and bacteria.
Main Results:
- Primary teeth with physiological resorption exhibited normal pulps and no bacterial presence.
- Pathological resorption cases demonstrated pulpal alterations, atypical resorption patterns, and significant bacterial findings.
- Differences in periradicular tissue conditions were also noted between the groups.
Conclusions:
- Histological examination effectively differentiates physiological from pathological tooth resorption.
- Bacterial infection and pulpal inflammation are key indicators of pathological resorption in primary teeth.
- These findings aid in understanding the distinct histological profiles of tooth resorption.
Related Concept Videos
01:15Teeth
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...
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...
01:21Tooth 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.
01:06Multipotency and Niche of Bulge Stem Cell
A hair follicle or HF is a small part of the skin that produces the hair shaft. Paul Gerson Unna was the first to observe a bulge in the human hair follicle's outer root sheath (ORS). The bulge is present between the sebaceous gland and the arrector pili muscle and is the niche for hair follicle stem cells (HFSCs). The bulge is also a niche for melanocyte stem cells, and their loss results in graying of hair. The HFSCs express Sox9 and Lhx2, which help them maintain stemness and prevent...