Dental Nursing Unit 304 - Dental anatomy and regional anatomy, oral health assessment and treatment planning Exam And Answers.
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Course
Dental Therapy
Institution
Dental Therapy
what can extra-oral palpation identify? - Answer can identify swellings in the lymph nodes which could indicate an infection or other condition which needs further investigation.
describe an incisor - Answer have a central incisor and a lateral incisor
both are single rooted
found at the...
Dental Nursing Unit 304 - Dental
anatomy and regional anatomy, oral
health assessment and treatment
planning Exam And Answers.
what can extra-oral palpation identify? - Answer can identify swellings in the lymph nodes which could
indicate an infection or other condition which needs further investigation.
describe an incisor - Answer have a central incisor and a lateral incisor
both are single rooted
found at the front of the mouth
we use our incisors to bite into food
incisors can be described as being flat. our central incisors have a larger appearance compared to our
lateral incisors.
what is palpation ? - Answer the dentist will be able to check the sensitivity of the gums around the
tooth by palpating or gently massaging the gums over the roots of the tooth or teeth suspected of
causing the pain.
what number in the oral cavity is an incisor? - Answer 8 ( 4 upper, 4 lower)
how many roots does an incisor have? - Answer 1
describe the occlusal surface of a incisor - Answer an incisor has a incisal edge. this is simply the part of
the tooth that is used to bite down on foods etc.
describe a canine - Answer these teeth rips our food in our mouth so it becomes easier to eat.
our canine helps to keep the correct bite even when our mouth moves.
our canines are single rooted and are found next to our incisors.
canines can be described as having a pointed edged appearance.
,what number in the oral cavity is a canine? - Answer 4 ( 2 upper, 2 lower)
how many roots does a canine have? - Answer 1
describe the occlusal surface of a canine - Answer A canine also has a incisal edge. this is simply the
part of the tooth that is used to bite down on foods etc
describe a premolar - Answer we have two types of premolar, our first premolar and our second
premolar. our upper first premolar has two roots and our lower first premolar has one root. our second
premolar has one root. the functions of our premolars are to help cut our food and also chew our food.
what number in the oral cavity is a premolar? - Answer 8(4 upper, 4 lower)
how many roots does the upper first premolar (4) have? - Answer 2
how many roots does the lower first premolar(4) have? - Answer 1
how many roots does the upper second premolar(5)? - Answer 1
how many roots does the lower second premolar(5) have? - Answer 1
describe the occlusal surface of a premolar - Answer A premolar has an occlusal surface. this is the
tooths biting edge. this is the surface of the tooth that bites down on the food. the occlusal surface is
found on the top surface of the tooth. the occlusal surface can be easily damaged as it is used often. a
habit like grinding your teeth or clenching your jaw can wear down the occlusal surface. to prevent the
occlusal surface being damaged night guards can be made and or small sealants can be placed over the
top of the occlusal surface to act as a layer of protection.
describe a molar - Answer these teeth are mainly used for chewing and are found at the back of the
mouth.
,what number in the oral cavity is a molar? - Answer 12 ( 6 upper, 6 lower)
how many roots does a molar have? - Answer upper first, second and third (6,7,8)- 3
lower first, second, third - 2
describe the occlusal surface of a molar - Answer molars also have an occlusal surface. this is the tooth
biting edge. this is the surface of the tooth that bites down onto the food. the occlusal surface is found
on the top surface of the tooth. the occlusal surface of a molar is the same as a premolar and any
damage to it can be repaired and prevented in the same way.
what is enamel? - Answer enamel acts as a protective layer, within our whole body enamel is the
strongest/hardest substance. the main material enamel is made of is mineral crystals 96%. these are put
into the shape of prisms. the mineral crystals are calcium hydroxyapatite. these mineral crystal lay at 90
degrees to the dentine( the next layer of the tooth) the meeting point of these two layers are called the
ADJ or the amelodentinal junction. enamel has quite a simple make up as it is non living and contains no
blood vessels or nerves, it has no colour and it will not renew or replace it self if it becomes damaged
however enamel can use ingredients such as fluoride from toothpaste to reduce the damage but it will
not fix the decay etc. altogether. enamel does not have the same thickness on every part of the tooth, it
gets thinner as you get closer to the neck of the tooth.
what is the amelodentinal junction? - Answer the amelodentinal junction is where the enamel and the
dentine meet. this junction can be described as having a curved appearance which allows the enamel
and dentine to meet more comfortably. thin 'branches' from the dentine reach over to the enamel to
connect the two.
what is primary dentine? - Answer the primary dentine is found between the enamel and the pulp.
primary dentine is already within the tooth before it breaks through. in terms of dentine, primary
dentine can be known as the outer layer of the dentine that is found next to the enamel. dentine does
have a yellowish colour to it, this can sometimes be seen if the patients enamel is very damaged. dentine
is made up of a combination of materials. these include inorganic hydroxyapatite crystals, organic
collagen fibers and water. there are two main types of primary dentine these are mantle dentine and
circumpulpal dentine. mantle dentine acts as a protective layer for all the other dentine in the tooth. the
percentage of mantle dentine is a lot smaller compared to the percentage of circumpulpal.
what is secondary dentine? - Answer secondary dentine develops after primary dentine. secondary
dentine forms once the tooth has broken through and as the tooth becomes older. within the tooth the
odontoblasts make the secondary dentine. dentine does have a yellowish colour to it, this can
, sometimes be seen if the patients enamel is very damaged. dentine is made up of a combination of
materials. these include inorganic hydroxyapatite crystals, organic collagen fibers and water.
what are odontoblasts? - Answer odontoblasts are very important in terms of the tooth structure. the
main function of odontoblasts is to produce the dentine for the tooth. the structure of odontoblasts are
cylinder/columns type shapes. the main type of material within odontoblasts is collagen.
what is pulp? - Answer the pulp of the tooth can be located at the middle of every tooth we have. the
pulp has many differences compared to other components of the tooth, the materials within the pulp is
all soft tissue, it contains no mineralized crystals like enamel and cementum. in addition to this it also
holds blood vessels and sensory nerves. this means this part of the tooth could feel pain and sensitivity
etc.
what is pulp/root canal? - Answer the root canal of the tooth may also be know as the radicular pulp of
the tooth. it is located at the root of the tooth. the pulp/root canal can be found under the cementum. in
teeth that only have one root there will only be one root canal and in teeth with more than root will
have one root canal per tooth.
what is the pulp chamber? - Answer the pulp chamber has an outer layer of odontoblast cells. the
odontoblast cells create the dentine. the chamber is at its best efficiency when the patient is younger as
the older the patient is the thinner the chamber gets which creates further dental problems like
unsuccessful treatments. the chamber can not only become thinner but can also experience pulp stones
meaning the whole chamber becomes blocked and the crystals can get stuck in the chamber.
what is apical foramen? - Answer we could describe the apical foramen as a corridor as blood vessels
and nerves travel through the apical foramen to reach the dental pulp. the apical foramen starts at the
end of the tooth root and acts as a point of entry for the blood vessels/nerves. the apical foramen may
be known more as the apex. different teeth will have a different number of apical foramen depending on
how many roots they have. for example multi rooted teeth will have the same number of apical foramen
as they do roots. each root will have its own apical foramen. single rooted teeth will only have one apical
foramen. without the apical foramen the pulp would have no access to blood vessels/nerves it needs to
survive.
what is cementum? - Answer cementum is in place to act as a layer of protection for the root of the
tooth. cementum is found at the neck of the tooth. alike enamel it is made up of a large percentage of
mineral crystals called calcium hydroxyapatite however cementum is only made up of 65% crystals. as
well as this is also does not have any blood vessels or nerves inside it. the cementum are connected to
the periodontal ligament by the collagen fiber ends of the periodontal ligament connecting themselves
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