A post and core is a dental restoration, which is used to sufficiently restore a tooth morphology followed by future restoration such as a crown, when there is no an adequate part of tooth hard tissue regarding to the required clinical indication of the case, due to loss of tooth structure as a result of decay, fracture or other causes. Post and cores can be referred as one of the foundation restorations. Continue reading
Author Archives: chzechze
Cystic hygroma
A cystic hygroma is a growth that often occurs in the head and neck area. It is a birth defect and is the most common form of lymphangioma. It contains large cyst like cavities containing watery fluid. Microscopically cystic hygroma consists of multiple locules filled with lymph. In the depth the locules are quite big but they decrease in size towards the surface. Continue reading
Types of Scalers
The American Academy of Periodontology published a position in paper summarizing what is known about these instruments and how they compare in their effectiveness (J. Periodontol 2000:71;1792-1801). Recent modifications of tip design for power driven scalers provide improved access into deep pockets and difficult to reach areas such as furcations. Therefore, studies were undertaken to shed light on the potential roles of sonic and ultrasonic scalers in periodontal therapy. Continue reading
Russell-Silver Syndrome
Russell-Silver syndrome is a disorder present at birth involving poor growth. One side of the body also will appear to be larger than the other. Continue reading
Patau syndrome
Patau syndrome, also known as trisomy 13 and trisomy D, is a chromosomal abnormality, a syndrome in which a patient has an additional chromosome 13 due to a nondisjunction of chromosomes during meiosis. Some are caused by Robertsonian translocations, while others are caused by mosaic Patau syndrome. The extra chromosome 13 disrupts the normal course of development, causing heart and kidney defects, amongst other features characteristic of Patau syndrome. Like all nondisjunction conditions (such as Down syndrome and Edwards syndrome), the risk of this syndrome in the offspring increases with maternal age at pregnancy, with about 31 years being the average. Patau syndrome affects somewhere between 1 in 10,000 and 1 in 21,700 live births. Continue reading
Tooth erosion
Acid erosion, also known as dental erosion, is the irreversible loss of tooth structure due to chemical dissolution by acids not of bacterial origin. Dental erosion is the most common chronic disease of children ages 5–17, although it is only relatively recently that it has been recognised as a dental health problem. There is generally widespread ignorance of the damaging effects of acid erosion; this is particularly the case with erosion due to fruit juices, because they tend to be seen as healthy. Erosion is found initially in the enamel and, if unchecked, may proceed to the underlying dentin. Continue reading
Dry lips
Cracked, dry or sore lips are both unsightly and painful. They can be caused by a variety of conditions and can also be symptoms of more serious illnesses. If you suffer from dry or cracked lips, read on to learn how to understand and treat the problem. Continue reading
Peutz- Jegher syndrome
Peutz–Jeghers syndrome, also known as hereditary intestinal polyposis syndrome, is an autosomal dominant genetic disease characterized by the development of benign hamartomatous polyps in the gastrointestinal tract and hyperpigmented macules on the lips and oral mucosa. Peutz–Jeghers syndrome has an incidence of approximately 1 in 25,000 to 300,000 births. Peutz-Jeghers syndrome (PJS) is named after two doctors who first studied and described it in 1921. It is an association of three very specific conditions in any one person. Continue reading
Oro-antral fistula
This is a fistulous communication between the floor of the maxillary sinus to the oral cavity. This commonly occurs following dental extraction of infected upper molar and premolar tooth. From a small cavity at birth, the maxillary sinus starts to enlarge during the third month of foetal life and usually reaches maximum development around the eighteenth year. Its volume is approximately 20-25 ml in a normal adult. The floor of the sinus consists of the alveolar process and the hard palate. Continue reading
Ramsay hunt syndrome
Ramsay Hunt syndrome is a painful rash around the ear that occurs when the varicella zoster virus infects a nerve in the head. This syndrome is also known as geniculate neuralgia or nervus intermedius neuralgia. Ramsay Hunt syndrome can also occur in the absence of a skin rash, condition known as zoster sine herpete. Continue reading