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Tree remains that have undergone petrifaction, as seen in Petrified Forest National Park. In geology, petrification (from Ancient Greek πέτρα (pétra) 'rock, stone') is the process by which organic material becomes a fossil through the replacement of the original material and the filling of the original pore spaces with minerals.
To achieve healing of the periapical lesion, one must obtain and maintain a decontaminated root canal system. System is to be emphasized, because the root canal system does not merely consist of tapering cone-shaped canals from orifice to apex , but rather, can and often is an intricate labyrinth of canals that diverge and weave to form an ...
The treatment of equine lameness is a complex subject. Lameness in horses has a variety of causes, and treatment must be tailored to the type and degree of injury, as well as the financial capabilities of the owner. Treatment may be applied locally, systemically, or intralesionally, and the strategy for treatment may change as healing progresses.
When the root is incompletely formed in adolescents and an infection occurs, apexification can be performed to maintain the tooth in position as the roots develop. In case of non-vital pulp: 1. Isolate the tooth with a rubber dam 2. perform root canal treatment. 3. Mix MTA and insert it to the apex of the tooth, creating a 3 mm thickness of ...
Risk of occurrence of a phoenix abscess is minimised by correct identification and instrumentation of the entire root canal, ensuring no missed anatomy. Treatment involves repeating the endodontic treatment with improved debridement, or tooth extraction. Antibiotics might be indicated to control a spreading or systemic infection.
Actinomyces, a bacterium that is found inside the canal, has the ability to degrade trans-1,4-polyisoprene. The internal root canal system in-vivo is anaerobic but even without the presence of bacteria, the C=O polymer chain will be lysed slowly into OH and C=O over time. Particularly during the presence of a periapical lesion, the penetration ...
Two horses stuck deep in mud for hours in Connecticut were pulled out by more than a dozen rescuers Saturday, emerging messy and tired, but safe. A trio of horses were walking from a pasture to a ...
Rain scald (also known as dermatophilosis, tufailosis, rain rot or streptothricosis [1]) is a dermatological disease affecting cattle and horses. Once in the skin, the bacterium Dermatophilus congolensis causes inflammation of the skin as well as the appearance of scabs and lesions.