Forwarded from Periodontics دفعه 40 (Aso hamady 5126)
💡 سؤال قالت ممكن انجيبه د.لجين
what are the two bony defect around buccal plate ?
1.Dehiscence
2.Fenestration
what are the two bony defect around buccal plate ?
1.Dehiscence
2.Fenestration
Forwarded from Deleted Account
#Pdl::
⭕️the connective tissue that surrounds the root and connect it to the bone.
🛑Radiographically::Pdl as space b/w the lamina dura and root of the tooth((Radiolucent)).
⛔️Average width of Pdl ~ 0.20mm(range 0.2_0.4mm)___Mcq.
🛑component of Pdl::
🔺periodontal fibers.
🔺cellular elements.
🔺Ground substance.
🔴the most important elements of Pdl➡️principal fibers.(((Sharpeyś fibers))).
🔵the principlal fiber are composed mainly #Collagen-type(l).
🔷collagen is synthesized by <<<Fibroblast>>>.
⚫️Fibres of peridontum ::
1_principal fibers collagen type I
2_Reticular fibers collagen type III
3_Basal fibers**collagen type IV
♥️principal fibers ((S.N))
1_Transseptal group::
Extend over alveolar bone Crest & embedded in the cementum of adjacent teeth.
NOT bone attachment.
Reconstructed immediately after destruction.
2_Alveolar Crest group ::extend obliquely from cementum just beneath the JE of the alveolar bone.
🚫Prevent the extrusion of the tooth and resist lateral tooth movement.
3_Horizontal group ::extend at right angles to long axis of the tooth from the cementum to the alveolar bone.
4_Oblique group:: largest group ((Mcq)).
Extend from the cementum in coronal direction obliquely to bone.
5_Apical group ::radiate in irregular fashion ((Mcq))
From the cementum to bone at apical region of socket.
Eruption tooth ((Open Apex))➡️No Apical fibers.[Mcq]
6_Interradicular fibers::fan out from cementum to the tooth in formation ((multirooted teeth))Mcq.
✴️Secondary group ::
1_indifferent fiber plexus
arranged in all directions.
2_Oxytalan fibers ::pre _elastic
Provide elasticity of Pdl.
Regulate vascular flow.
Parallel to the root surface in vertical direction &attach cementum.
3_Reticular fibers.
✳️general function of Pdl fibres?
Attachment protection.
✳️function of principles fibres?
Mainly attachment.
♣️ 4types of cell in Pdl::
1_C.T cells((fibroblast, cementoblast, osteoblast))
2_epithelial rest cells.
3_immune system cells.
4_cells associated with neurovascular elements.
🔴the most common cell in Pdl ➡️fibroblast.
Elongated cells with psedopodia processes.
They synthesize and degrade,regulate collagen.
🔴Epithelial rest of malassez ::form a latticework in Pdl.
⛔️proliferation when stimulated and participate in formation of peri-apical & lateral root cysts.
🔴ground substance :Glycosaminoglycans, proteoglycana,Glycoproteins.
✅High water content ((70%))Mcq
✳️function of Pdl? #S.N
1.physical.
2.formative and remodelling.
3.nutritional,and sensory.
💎physical functions ::
1_protect the vessels and nerves from injury by mechanical force.
2_transmission of occlusal forces.
3_attachment tooth to bone.
4_maintenance of the gingival tissue in proper relationship to teeth.
5_resistance to the impact of occlusal forces(shock absorption).
⛔️resistance to impact of occlusal forces ~~~~~ two theories relative to the of tooth support:
1_The tensional theory.
2_The viscoelastic systems theory.
💟In single rooted teeth,axial of rotation in ((area b/w apical third & middle third of the root)).
💟in multirooted teeth, axis rotation in the bone b/w the roots.
⛔️with the physiologic mesial migration of the teeth, Pdl thinner on mesial root surface than distal.
⛔️cells of Pdl participate formation and resorption of cementum, bone occur during :
*Repair of injuries.
*physiologic tooth movement.
*Accommodation of the periodontium to occlusal forces the repair of injuries.
💟Pdl supplies nutrients to the cementum, bone, and gingiva.
💟Pdl is supplied with sensory nerve fibers capable of transmitting tactile, pressure,and pain sensations by the trigeminal pathway.
بالتوفيق 👍👍
⭕️the connective tissue that surrounds the root and connect it to the bone.
🛑Radiographically::Pdl as space b/w the lamina dura and root of the tooth((Radiolucent)).
⛔️Average width of Pdl ~ 0.20mm(range 0.2_0.4mm)___Mcq.
🛑component of Pdl::
🔺periodontal fibers.
🔺cellular elements.
🔺Ground substance.
🔴the most important elements of Pdl➡️principal fibers.(((Sharpeyś fibers))).
🔵the principlal fiber are composed mainly #Collagen-type(l).
🔷collagen is synthesized by <<<Fibroblast>>>.
⚫️Fibres of peridontum ::
1_principal fibers collagen type I
2_Reticular fibers collagen type III
3_Basal fibers**collagen type IV
♥️principal fibers ((S.N))
1_Transseptal group::
Extend over alveolar bone Crest & embedded in the cementum of adjacent teeth.
NOT bone attachment.
Reconstructed immediately after destruction.
2_Alveolar Crest group ::extend obliquely from cementum just beneath the JE of the alveolar bone.
🚫Prevent the extrusion of the tooth and resist lateral tooth movement.
3_Horizontal group ::extend at right angles to long axis of the tooth from the cementum to the alveolar bone.
4_Oblique group:: largest group ((Mcq)).
Extend from the cementum in coronal direction obliquely to bone.
5_Apical group ::radiate in irregular fashion ((Mcq))
From the cementum to bone at apical region of socket.
Eruption tooth ((Open Apex))➡️No Apical fibers.[Mcq]
6_Interradicular fibers::fan out from cementum to the tooth in formation ((multirooted teeth))Mcq.
✴️Secondary group ::
1_indifferent fiber plexus
arranged in all directions.
2_Oxytalan fibers ::pre _elastic
Provide elasticity of Pdl.
Regulate vascular flow.
Parallel to the root surface in vertical direction &attach cementum.
3_Reticular fibers.
✳️general function of Pdl fibres?
Attachment protection.
✳️function of principles fibres?
Mainly attachment.
♣️ 4types of cell in Pdl::
1_C.T cells((fibroblast, cementoblast, osteoblast))
2_epithelial rest cells.
3_immune system cells.
4_cells associated with neurovascular elements.
🔴the most common cell in Pdl ➡️fibroblast.
Elongated cells with psedopodia processes.
They synthesize and degrade,regulate collagen.
🔴Epithelial rest of malassez ::form a latticework in Pdl.
⛔️proliferation when stimulated and participate in formation of peri-apical & lateral root cysts.
🔴ground substance :Glycosaminoglycans, proteoglycana,Glycoproteins.
✅High water content ((70%))Mcq
✳️function of Pdl? #S.N
1.physical.
2.formative and remodelling.
3.nutritional,and sensory.
💎physical functions ::
1_protect the vessels and nerves from injury by mechanical force.
2_transmission of occlusal forces.
3_attachment tooth to bone.
4_maintenance of the gingival tissue in proper relationship to teeth.
5_resistance to the impact of occlusal forces(shock absorption).
⛔️resistance to impact of occlusal forces ~~~~~ two theories relative to the of tooth support:
1_The tensional theory.
2_The viscoelastic systems theory.
💟In single rooted teeth,axial of rotation in ((area b/w apical third & middle third of the root)).
💟in multirooted teeth, axis rotation in the bone b/w the roots.
⛔️with the physiologic mesial migration of the teeth, Pdl thinner on mesial root surface than distal.
⛔️cells of Pdl participate formation and resorption of cementum, bone occur during :
*Repair of injuries.
*physiologic tooth movement.
*Accommodation of the periodontium to occlusal forces the repair of injuries.
💟Pdl supplies nutrients to the cementum, bone, and gingiva.
💟Pdl is supplied with sensory nerve fibers capable of transmitting tactile, pressure,and pain sensations by the trigeminal pathway.
بالتوفيق 👍👍
❤2
Forwarded from Periodontics دفعه 40 (Aso hamady 5126)
💡 which of the following drugs cause gingival enlargement and consider to be does related
a- nifedipine
b-asprin
c- cyclosporine ✔️
d- phenytoin
a- nifedipine
b-asprin
c- cyclosporine ✔️
d- phenytoin
Forwarded from Periodontics دفعه 40 (Aso hamady 5126)
💡 Assessment short note
1.ethiological factors of gingival recession
2. Dehiscence and fenestration
3.role of saliva in gingiva defense
🔴 MCQS
مش متذكرين صيغة السؤال بضبط
❓❓1.about Cyclosporine, the gingival enlargement is characterized by
a.dose related
b.tacrolimus result in less gingiva growth
C.non inflammatory gingival enlargement
D.inflammatory gingival enlargement
عموما الدكتوره في المحاضره قايله انه حتجيبه وتبي dose related بس في الامتحان قالت مش انا اللي حطيت السؤال
والثلاث اجوبه صح شن يبو ماقالوش
❓❓2.not true about tooth associated plaque
a.minimal tissue destruction
b.gram positive bacteria and actinomyces
C.apical third adjacent to gingival margin separated from JE by leukocytes layer! تقريبا هكي الجمله
D.marginal plaque
❓❓3.most important iatrogenic factors
a.roughness and poorly contoured
b.overhang restoration
C.open margin located subgingival
D.all of the above
4.root planing
A.Remove etiologic factors from root surface✔
5.cannot distinguish betwee normal and initial state of gingivitis
A- inflammatory neutrophills migrate from oral cavity to the gingiva
B.predominantly of T-CELL ✔ تبي هذا الدكتوره قالت 😔
6.not considered as a stage of gingivitis
A.advanced ✔
7.Scaling strokes
A.short powerful ✔️
8.Working Angulation at
A.45-90 degrees✔️
9.gingival fibers
A.gingivodental, circular and transseptal ✔️
10.alveolar bone consist of the following except
A.external plate
B.inner socket
C.cancellous bone
D.basal bone ✔️
11.bundle bone contains a great number of
A.sherpeys fiber ✔️
12.valley like depression connects the facial to the lingual papilla
A. COL ✔️
❓❓13.Different between mateia alba and dental plaque
A.duration of Adherence
B-Lack internal structure
14.all are function of pdl except
A.defense ✔
15.13- Pyogenic granuloma
A- neoplasm
B- non specifc conditioned ✔
C- drug induced
16.drugs can cross gigniva بلمعنى هذا
A- metronidazole ✔
B- amoxillin
17.Which cause pegmintaion of gingiva
A- heavy metal ingestion
B- abnormal melanin
C - addison disease
D- all of te above✔
❓❓18.Calculus : all true except
A- aggrivate periodontal disease
B- Does reach the base of the pocket
C- premeable and absord toxins
D- facilaite plaque retention
19.Chronic inflammation all true except ;
A. sudden onset short duration✔
20.process by which Residual calculus removed from root to produce smooth,hard and clean surface
A.root planing ✔
1.ethiological factors of gingival recession
2. Dehiscence and fenestration
3.role of saliva in gingiva defense
🔴 MCQS
مش متذكرين صيغة السؤال بضبط
❓❓1.about Cyclosporine, the gingival enlargement is characterized by
a.dose related
b.tacrolimus result in less gingiva growth
C.non inflammatory gingival enlargement
D.inflammatory gingival enlargement
عموما الدكتوره في المحاضره قايله انه حتجيبه وتبي dose related بس في الامتحان قالت مش انا اللي حطيت السؤال
والثلاث اجوبه صح شن يبو ماقالوش
❓❓2.not true about tooth associated plaque
a.minimal tissue destruction
b.gram positive bacteria and actinomyces
C.apical third adjacent to gingival margin separated from JE by leukocytes layer! تقريبا هكي الجمله
D.marginal plaque
❓❓3.most important iatrogenic factors
a.roughness and poorly contoured
b.overhang restoration
C.open margin located subgingival
D.all of the above
4.root planing
A.Remove etiologic factors from root surface✔
5.cannot distinguish betwee normal and initial state of gingivitis
A- inflammatory neutrophills migrate from oral cavity to the gingiva
B.predominantly of T-CELL ✔ تبي هذا الدكتوره قالت 😔
6.not considered as a stage of gingivitis
A.advanced ✔
7.Scaling strokes
A.short powerful ✔️
8.Working Angulation at
A.45-90 degrees✔️
9.gingival fibers
A.gingivodental, circular and transseptal ✔️
10.alveolar bone consist of the following except
A.external plate
B.inner socket
C.cancellous bone
D.basal bone ✔️
11.bundle bone contains a great number of
A.sherpeys fiber ✔️
12.valley like depression connects the facial to the lingual papilla
A. COL ✔️
❓❓13.Different between mateia alba and dental plaque
A.duration of Adherence
B-Lack internal structure
14.all are function of pdl except
A.defense ✔
15.13- Pyogenic granuloma
A- neoplasm
B- non specifc conditioned ✔
C- drug induced
16.drugs can cross gigniva بلمعنى هذا
A- metronidazole ✔
B- amoxillin
17.Which cause pegmintaion of gingiva
A- heavy metal ingestion
B- abnormal melanin
C - addison disease
D- all of te above✔
❓❓18.Calculus : all true except
A- aggrivate periodontal disease
B- Does reach the base of the pocket
C- premeable and absord toxins
D- facilaite plaque retention
19.Chronic inflammation all true except ;
A. sudden onset short duration✔
20.process by which Residual calculus removed from root to produce smooth,hard and clean surface
A.root planing ✔
❤2
Forwarded from 𝙃𝙖𝙢𝙯𝙖𝙝.
السؤال الرابع
تقدرو تجاوبو الـفنكشن صح / ولا الفقرات هذينا صح.
تقدرو تجاوبو الـفنكشن صح / ولا الفقرات هذينا صح.