Midterm Flashcards
SRP in pockets greater than 6mm can result in what percentage of plaque and calculus reduction?
32%
OFD in pockets greater than 6mm can result in what percentage of plaque and calculus reduction?
50%
SRP in pockets 4-6mm can result in what percentage of plaque and calculus reduction?
43%
OFD in pockets 4-6mm can result in what percentage of plaque and calculus reduction?
76%
SRP in pockets 1-3mm can result in what percentage of plaque and calculus reduction?
86%
OFD in pockets 1-3mm can result in what percentage of plaque and calculus reduction?
86%
The CEJ should be approximately ____ from the osseous crest
2mm
The gingival margin should be ___ coronal to the CEJ (covering the anatomic crown)
0.5-2.0mm
Stages of normal tooth eruption according to crown lengthening lecture
???
Minimum healing tine before taking impressions after crown lengthening is ____ weeks
6 weeks
In pockets greater than 5mm, plaque and calculus is left 85% of the time?
true
Contraindications for bone graft include:
poor oral hygiene/plaque control
Non-surgical treated areas have a greater percentage of defects that convert from non diseased for :
single & multi-rooted teeth
What do you you use the end cutting bur for?
ostectomy
What do you use the large round bur for (#6 or #8) for?
osteoplasty
What files are used inter proximally?
9/10 schluger & #3S/4S sugarrman
What is the best graft material?
Autograft???What in
cadence do palatal exostosis occur?
40% incidence
Why might flap necrosis occur?
palatal flap too thin
The union of connective tissue with root surface that has been deprived of it original attachment apparatus:
new attachment
The healing of a wound that does not fully restore the architecture in function (healing of long junctional epithelium)
repair
The reunion of connective tissue with root surface on which viable PDL tissue is present (biologic width regrowing when flap reattached):
reattachment
Most common type of flap:
mucoperiosteal
Split thickness flap leaves:
periosteum on bone
What type of defect is most common?
crater
What is the therapeutic goal of perio therapy?
functional, comfortable, healthy, and stable probing
T/F: Periodontal osseous defects are classified by bone missing
False- defects are classified by bone remaining
How many incisions does a palatal flap have?
4
Gingivectomy is most often for:
elimination of gingival enlargements
Position of flap margin on osseous/alveolar crest leads to:
pocket elimination
Keeping epithelium out is:
guided tissue regeneration
What would you go to to get interproximal bone loss/defects but no facial defects:
anterior curtain
histological difference of palatal flap:
thick CT
What is the second incision of palatal flap?
undermine
(trace, undermine, contact bone, intrasulcular)
Where does healing potential come from?
PDL
Contributing anatomy to perio defect in retromolar pad area except:
mylohyoid ridge
Disadvantages to surgical approach to tuberosity area:
???
Distal wedge???
preserve keratinized tissue
You have a patient with lots of bleeding and sub G calculus. You are doing scaling in the presence of inflammation. What do you do?
use local anesthetic per quad
Ostectomy is:
removal of alveolar bone proper
T/F: The space between the roots matters (2.5mm)
true
Hemiseptum =
1 wall
True intrabony =
three wall
Three things you need before crown lengthening include:
How do you know where to start for crown lengthening?
bone sounding
Autograft:
using ones own bone for bone graft
WHen you can see a window in the bone, this is called:
fenestration
most successful type of defect:
3 wall defect
Pic of intramarrow penetration, the purpose of this is:
to increase blood flow and promote healing
CEJ should be ____ mm from osseous crest:
2mm
Which of the following is not distal wedge flap?
trapezoidal
factors affecting retromolar area: (4)
- external oblique ridge
- lingual bony ridge
- ascending ramus to terminal tooth proximity
- impacted 3rd molars
factors affecting tuberosity area: (3)
- palatal exostosis
- buccal exostosis
- impacted 3rd molars
Distal wedge advantages/indications:
- management of pockets in keratinized tissue
- access to osseous defects
- access to exostosis removal
- less post op discomfort due to primary closure
types of distal wedge flap shapes:
- square
- triangular
- linear
- O & R (trap door)
Excessive force on a normal system:
primary occlusal trauma
Which side of the trauma from occlusion is associated with resoprtion of the alveolar bone proper?
compression
Trauma from occlusion in the abscess of inflammation does NOT cause:
- gingivitis
- periodontitis
- pocket formation
- mucogingival defects
Periodontitis superimposed with occlusal trauma produces an ____ in bone loss
increase
Which of the following is considered pathologic?
traumatic occlusion
What is associated with an increased density in the lamina dura?
hyperfunction
What is associated with capillary hemorrhage into the pdl spaces?
Traumatic occlusion
The principle of excluding epithelium and connective tissue from surgical site is termed:
guided tissue regeneration
What does pocket elimination do?
- creates shallow sulci
- ease of maintenance by therapist and patient
Most common type of flap design is:
mucoperiosteal
Histologic difference that separates the palatal flap from other flaps:
thickness of connective tissue
the second incision of a palatal flap is also known as:
undermine
The third incision of a palatal flap is also known as:
contact with bone
All of the following are factors exaggerating the periodontal bony lesion in the retromolar area EXCEPT:
A) external oblique ridge
B) mylohyoid ridge
C) proximity of ascending ramus to the terminal tooth
D) impacted 3rd molars
B
Disadvantages of surgical approach to the tuberosity area include:
- presence of exostosis on the palatal aspect
- presence of exostosis on the buccal aspect
- presence of impacted 3rd molars
Disadvantages of surreal approach to tuberosity area include:
- can’t gain access to osseous defects
- incisions end in mucosa
- extremely broad wound
- exposed exostosis
Know the advantages/indications of the distal wedge flap procedure:
- management of pockets and keratinized tissue
- access to osseous defects
- accesses for exostosis removal
- less post-op discomfort due to primary closure
List the contraindications of a distal wedge flap:
- flat palate
- limited distal space
- when no osseous defect exists
List the types of distal wedge flaps:
- triangular
- linear
- square
Gingivectomies are typically tarted with an ____ bevel
external
List the contraindications of gingivectomies:
- anterior maxilla region
- base of pocket apical to MG junction without attached tissue
- infra bony defects
T/F: You can perform a gingivectomy for the exposure of unerupted teeth
true
A modified Widman flap requires:
3 separate incisions
The purpose of a modified Widman flap:
allow access to root surface
Which type of flap is used in the maxillary anterior region where there are interproximal defects but not facial defects:
anterior curtain
Hemiseptum is another name for which type of defect?
1 wall
Which is the most common osseous defect?
2 wall- crater defect
Which is a true intrabony defect?
3 wall
Which type of defect has the greatest predictability of success?
3 wall defect
Interdental Crystal bone located APICAL to the level of the radicular bone is termed:
negative architecture
Which of the following is NOT a determinant of gingival contour:
bone
(Interdental space, position of tooth in arch, and root/crown shape all are determinants of gingival contour)
Contraindications of osseous surgery include:
- 3-wall defect
- maxillary anteriors
- isolated deep defects
(ledges and tori are NOT a contraindication of osseous surgery)
Which of the following materials is osteoconductive?
freeze dried bone allograft
Vertical defects occur when the distance between the roots of the teeth is greater than:
2.5 mm
which of the following does NOT have an effect on bone grafts?
use of antibiotics
(intramarrow penetration, endodontics, and smoking do)
Platelet rich plasma is used to induce the formation of:
platelet derived growth factors
Attachment loss =
Probing depth + GM (enlargement)
Gingival enlargement is a ____ value
negative
Gingival recession is a ____ value
positive
Trauma from occlusion does NOT cause:
recession
Aggressive periodontitis is now termed:
periodontitis
Studies show that single rooted teeth are better than molars for:
surgical and non-surgical perio therapy
Gingivectomies are done to eliminate:
- gingival enlargements
- SUPRAbony pockets
Primary goal of periodontal surgical procedures is:
ACCESS
The only advantage of a gingivectomy is:
easier and quicker
(cannot gain access to osseous defects, broad wound may be created, and incision often ends in mucosa)
- flat palate
- limited distal space
- when NO osseous defect is present
contraindications of distal wedge
What is both an INFRAbony and INTRAbony defect?
3 wall defect
Give an example of an indication for osseous surgery:
osseous ledges & tori
Root sensitivity is a disadvantage of:
osseous surgery
If placement of flap margin is done at the alveolar crest, the goal is:
elimination of pocket depth
What is a contraindication for osseous grafting?
poor plaque control
A graft with 25% hydroxyapatite and 75% freeze dried bone is an:
composite graft
What is a disadvantage of an osseous graft?
expensive
T/F: Osseous surgery success is defect dependent
True
Residual calculus is found at the:
CEJ and line angles
Patient has #1 missing and a defect on #2, the best choice of flap is:
distal triangular wedge
Where does the incision start for a palatal flap?
2/3 probing depth
An ideal bone graft releases:
BMP slowly to form bone
Trauma from occlusion in the absence of inflammation may be responsible for causing:
bone density loss
The main tissue that GUIDED TISSUE REGENERATION exlcludes:
epithelium
Open flap curettage uses a ____ bevel incision
intrasulcular- modified Widman, palatal flap
Which of the following will NOT increase the width of keratinized tissue?
modified widman flap
Crown lengthening usually requires:
ostectomy on the facial
The 2nd step in the healing sequence of a bone graft is:
revascularization
Free gingival grafts will end up:
revascularizing with the underlying connective tissue
The coding to determine the type of tissue you obtain from a graft is in the:
CT
Epithelium gets its blood supply and nutrients from:
underlyng CT
What is hard to accomplish with a bone augmentation:
height
