The stages of tooth development There are several stages of tooth development which are initiation, bud stage, cap stage, bell stage, apposition, maturation and root formation and eruption. Prior to initiation, after about 7 weeks in the utero, the band of thickened epithelium develops into the upper and lower jaw and gives rise to the vestibular and dental lamina. These bands grow thicker as it is condensed with cells which is the origin of the forming tooth. These bands then develop blood vessels and soon this forms the arch with the alveolar process. Initiation The initiation of the tooth is the induction process between the epithelium and connective tissue resulting in the growth of the dental lamina into the connective tissue. This process …show more content…
(Obtained from http://histology-world.com/photoalbum//displayimage.php?pid=558 ) Cap stage The cap stage occurs during the ninth to tenth week of development. The cap stage is where further growth of the bud that becomes indented and covers the connective tissue that is called the dental papilla; the cells of the cap are morphodifferentiated into four layers namely the enamel organ (previously dental lamina), dental papilla and dental sac (previously mesenchyme cells). During the cap stage, the growth and differentiation of different tissues involved give rise to distinct function and morphology of the tooth components. The dental cap is formed as a result of the morphodifferentiation of mesenchyme cells which surround the enamel organ. The term “cap” is used because the tissue formed encapsulates the enamel organ. The invagination between two “lobes” of the dental sac gives rise to dental papilla. According to Ten Cate’s Oral Histology textbook, when the enamel knot is formed, there are many signaling molecules that are expressed, including Bmp2, Bmp4, Bmp7, Fgf4, Fgf9, Wnt10b, Slit1 and Shh. The enamel knot signals are formed at the future cusps (example: molars) Eventually, the enamel organ will form the enamel, the dental papilla will form the dentin and pulp, and the dental sac will form the supporting structures of a tooth (peridontium, cementum and the alveolar
Tooth surfaces are referred to by various names in dentistry, including mesial, distal, buccal, and lingual. If you drew a midline t...
The child is at stage three linguistic speech in oral development (Fellows & Oakley, 2014). They show evidence of this in both their receptive and expressive language meeting the criteria for this stage (Fellows & Oakley, 2014). They show evidence of their receptive language by their ability in being able to understand opposites (Fellows & Oakley, 2014). While they had some issues with the differences between soft and scratchy they were able to demonstrate the differences between big and little several times during the dialogue. They showed evidence of their expressive language by their use of telegraphic speech, expanding vocabulary and in the ability to take in turns of speaking and listening (Fellows & Oakley, 2014). Telegraphic
The article Poor Teeth was written by Sarah Smarsh with the goal in mind being to shed light on the issue between upper and lower class society in a particularly concrete way. Teeth and dental health are an easy thing for people to imagine in their head because everyone has a set whether they’re white and shiny or black and rotted. This makes it easy to draw a comparison between people that care for their teeth and those who don’t. However, access to dental knowledge and services which the lower class often times doesn’t have is very different between the poor and the rich. While the rich stroll through life showing off their perfect glossy white rows of teeth, there are less privileged people out there with barren mouths whose weak pale gums
The first stage of periodontal disease is gingivitis. Gingivitis is an inflammation of the gums, and is referred
The first solution for tooth cavities is visiting the dentist and filling the tooth cavities with dentistry. However, it is possible to remove tooth cavities at home in a natural way.
Around 6-9 months, deciduous (milk teeth) teeth erupt. The deciduous teeth start to shed around 6 years old. First the incisors shed. Then the canines and premolars. Finally, the
1.1 Describe, in-depth, stages of development from conception to birth in groups of 4 weeks i.e. 0-4, 4-8, 8-12...36-40 weeks.
This stage deals with the ages from birth to 1 year. This is the stage when
In this time period, it takes about 11 to 15 days for the attachment of the zygote to the uterine wall, making the zygote form an attachment. The next stage of prenatal development is the embryonic period. This is the period of prenatal development that occurs from two to eight weeks after conception. During this period, the cells are multiplying at rapid speeds, support systems begin to form, and organs begin to show up. This period is when the umbilical cord, the life support system that connects the baby to the placenta is formed. The placenta allows small blood vessels to go from the mother to the baby. This is how the baby can get food from its mother. Mothers need to be very careful what they eat and drink, because everything that they do will affect their baby. If they drink or do drugs, it can severely affect the babies development. By the time most woman find out they are pregnant (5-8 weeks) the organs have already begun forming. “At about 21 days, eyes begin to appear, and at 24 days the heart cells begin to differentiate.” During the fourth week, the arms and legs being to grow. At eight weeks, the organism is just about one inch long and the face has started to develop.
Tooth brushing techniques causing gingival trauma are a significant factor for gingival recession. The frequency, duration and force of brushing all contribute to recession. Excessive force and improper technique may lead to ...
-The removal of tooth structure that involves the inner dentinal walls by cells originating from the dental pulp. Most instances occur during adulthood and have no sex predilection. Initiation is either idiopathic or associated with some form of trauma or dental decay. The walls of the canal are smooth and well defined. Root canal therapy may prove beneficial if the resorption area can be properly instrumented, otherwise, extraction is warranted. (First time I saw this was just last week)
An embryos skeleton is made up mostly of cartilage; cartilage is later replaced by bone over the years, through a process called ossification. The two types of ossification are intramembranous ossification that develop membranous bone and endochondral ossification that develops cartilaginous bone. Cartilage is located in places like your ears and nose, cartilage is also found near the ribs in order to expand whenever you breathe.
Dental plaque is broadly classified as supragingival or subgingival based on its position on the tooth surface toward the gingival margin. Supragingival plaque is found at or above the gingival margin. Therefore, it can be further differentiated into coronal plaque, whi...
As children grow towards adolescence they go through many stages of development. Child development refers to the stages of physical, cognitive, emotional, social, and language growth that occurs from the birth to beginning of adulthood. All aspects of a child's development may be affected by many different factors, including a poor learning environment, lack of social interaction, cultural background differences, abuse, and loss of a parent. All of the before mentioned examples can affect the child's maturation, "a biological growth process that enables orderly changes in behavior, relatively uninfluenced by experience" (Myers 172). Children grow and mature at very different rates, some faster than others, which is why it is necessary to understand the importance of the different types of child development. Though all parts of child development are important, it is probably language learning that is most important to a child's development as a whole.
There are three stages of Prenatal Development. They include the germinal stage, the embryonic stage, and the fetal stage. The germinal stage is the first and the shortest stage. When the sperm from a man and the egg of a woman collide, they will create a union called the zygote. Over the next 36 hours, fertilization completes and becomes mitosis. This process is how the zygote travels through the fallopian tube toward the uterus.