S3 Guidlines Flashcards

(52 cards)

1
Q

What is the aim of step 3 guidance in peridontal treamtent

A

To treat those areas of the dentition thayt are not responding adequately to step 2 with the purpose of gaining further access to subgingival instrument ion or aiming at resecting those lesions that add complexity in the managment ( bone defects)

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2
Q

What is periochip

A

This is a treatment adjunct for periodontal disease it is a chlorhexidine infused gelatin matrix and it is inserted into the pocket following PMPR

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3
Q

When would you use periochip

A

Following PMPR in localised sites that haven’t responded e.g. angular defects or furcation

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4
Q

What is dentomycin

A

This is a local antimicrobial used as an adjunct in periodontal therapy - 2% minocycline gel
Inserted into pocket following subignvial PMPR

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5
Q

What is the function of dentomycin

A

Reduces bacterial load of periodontal pathogens in that pocket to try and allow the healing process to occur

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6
Q

When might periodontal surgery be indicated ?!

A

In sites where good quality non surgical periodontal treatment has not resolved periodontal pocketing and there is ongoing inflammation or infection .

Periodontal pocketing >6mm

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7
Q

What 4 factors should be considered before going ahead with periodontal surgery

A

Patient - oral hygiene, the quality of maintenance available
Tooth - access to non reposnding sites, tooth position and anatomy
Medical considerations
Operator skill level

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8
Q

What are the aims of access surgery in Periodontology

A

Access to area of continued inflammation or infection
Usually for areas with pockets >6mm
To allow for surgical debridement

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9
Q

Why must be wary of angular bone defects

A

They are high chance of Relaspe if appropriate support measures not put in place

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10
Q

What are indications for regenerative periodontal surgery

A

Intrabony defects 3mm or deeper
Class 2 or 3 furcation defect

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11
Q

When considering the tooth for periodontal surgery what things do we want to look for

A

Tilting
Overeruption
Proximity to adjacent roots
Enamel pearls
Ridges or grooves

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12
Q

What is the difference between conservative and resective approaches in periodontal surgery

A

Conservative is preserving tissue and resective is removing tissue

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13
Q

What are 4 indications for mucogingival surgery

A
  • Periodontitis lesions requiring reconstructive or regenerative surgery
  • Mucogingival deformities that require periodontal plastic surgery procedures ( recession)
  • Short clincal crowns where an increase in clincal crown height is required before restorations constructed
  • Remove of a frena
  • Creation of a more favourable soft tissue bed pre-implant surgery
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14
Q

What are the three most common mucogingval surgeries

A

Free gingival graft
Pedicle graft
Connective tissue graft

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15
Q

What is the difference between a full thickness and a split thickness flap

A

Full thickness flap - entire soft tissue including the periosteum exposing the bone

Split - leaving the periosteum behind covering the bone

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16
Q

Why do we use a split thickness flap in free gingival graft

A

To allow for a better blood supply

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17
Q

What is the difference between a free graft and a pedicle sliding graft§

A

In a pedicle sliding graft - the tissue is still attached at the base so there is a good blood supply

The flap is rotated laterally to cover the defect

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18
Q

What is the best situation for a connective tissue graft

A

Single recession defects

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19
Q

What are the 3 types of intra- Bony defects

A

1 wall - through and through
2 wall
3 wall

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20
Q

Why does a 3 wall bony defect have the best healing

A

Because there are osteoblasts coming from all sides

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21
Q

In access and resective surgey how do we heal

A

Heal through formation of long junctional epithelium

22
Q

Define gingival recession

A

Describes the apical migration of the gingival margin from the cemento-enamel junction

23
Q

When a patient has gingival recession - what are indications for treatment

A

Poor aesthetics
Difficult plaque control and sensitivity

24
Q

Name 4 causes of localised recession

A

Excessive tooth brushing - incorrect technique
Traumatic incisor relationship
Habits - tongue stud - end of a pencil chewing
Anatomical - frenulum pull

25
What is the classification of gingival revcession
Type 1 - no interproximal tissue loss, full root coverage may be achievable Type 2 - interproximal tissue loss not as significant as mid buccal - partial root coverage may be expected Type 3 - gingival recession assoacted with loss of attachment , tissue loss worse than mid buccal No root coverage expected
26
How do we treat gingival recession 7 marks
- record the magnitude of the recession ( clinically or on a study model) to access progression or stability - eliminate aetiological factors ( habits) - oral hygiene instruction ( single tufted brush) - topical desensitising agents and toothpaste - gingival veneer to cover exposed roots - crowns with great care and appropriate diangisutic wax up - mucogignical surgery
27
What is the aim of crown lengthening surgery
To apicallly re-reposition the entire periodontal attachment including usually the alveolar bone
28
Name 4 indications for crown lengthening surgery
Increase clinical crown height to give adequate retention for restorations Exposure enough clinical crown to allow a restorative ferrule to be placed Expose subgingival restorations margins, secondary cares and fractures Correction of uneven gingival contour compromising aesthetics including excessive gingival display
29
Name two drugs that can cause gingival hyperplasia
Cyclosporine and Amlodipine and nifedipine
30
What is the prescription for metronidazole for if prescribing antibiotics for a patient with a periodontal abscess
Metronidazole 400mg 3x daily for 3 or 5 days
31
What must we be wary of when prescribing metronidazole
It interacts with alcohol and warfarin
32
Patient needs antibiotics for a periodontal abscess but is on warfarin what would you prescribe
Phenoxymethpenicllin 500mg 4x daily 5 days
33
How do u diagnose a endo- perio lesion - what is the process
Must be first checked for any evidence of root fracture - then managment depends on periodontal status
34
What is a keystone pathogen
The keystone pathogen hypothesis holds that certain low abundance microbial pathogens can orchestrate inflammatory disease by remodelling a normally benign micrbiota into a dysbiotic one
35
What is the keystone pathogen in periodontitis
Porphyromonas gingivalsi
36
What are the ideal outcomes of periodontal treatment in accordance with SDCEP guidance
Plaque scores below 15% Bleeding scores below 10% Probing depths of less than 4mm
37
What is the difference between marginal bleeding and Bop
Marginal bleeding indicates the patients oral hygiene - assessed by sweeping probe along the gingival margin at approx 45 degrees Bleeding on probing indicates inflammation at base of periodontal pocket
38
What is a non responding site
A site that does not regain attachment following treatment the bleeding and pocket depths are not reducing A pocket which is 4mm or above which bleeds A pocket 5mm and above
39
What are the treatment options for a non responding site
Repeat non surgical treatment if there are multiple non healing sites as well as bleeding OHI importance must be highlighted to patient If there OHI is good and there is no bleeding - surgical therapy would be appropaote
40
What is the mechanism of action of chlorhexidine
Disruption of cell membrane - binds to negatively charged bacterial cell walls ; reducing the integrity of the cell membrane leading to cell death Precipitation of cytoplasmic contents ; leads to disruption of cellular mechanism and function
41
What is substantivity
The ability to maintain its antimicrobial effectiveness for an extended period of time after initial application
42
What can substantivity be influenced by;
Presence of saliva Oral biofilm Chemical properties of CGX
43
Someone with BPES of 3 and 4 should have pocket charts done how often?
A baseline pocket chart should be done annually
44
When should a dentist prescribe LA to a hygienist/ therapist
PGD directive ; working under direct access Should just say on prescription as required
45
What should the prescription for LA be when prescribing to a hygienist
Type of LA - including the makeup Number of cartridges prescribed Max dose Frequency - usually as required Route of administration
46
Name 3 clincal findings which would lead you to refer a patient
Pockets over 6mm and over 1/3 bone loss Mobility Furcation grade 2 and 3
47
How long should we wait to have resolution of the pocket before we do a review 6PPC
6-8 weeks
48
What are 4 risks of chlorhexidine use
Staining - should only be used for 2 weeks max Can sting - particularly in areas if patient has ulcers ( can dilute with water) Altered taste sensation Hypersensitivity/ allergy
49
Name 3 conditions that periodontitis may be a manifestation of systemic diease
Down syndrome Ehlers Danlos Papillon lefevre - patients neutrophils dont wokr
50
What is the rate of plaque formation influenced by
Oral hygiene Diet composition Salivary flow rate
51
What are the 3 stages of plaque formation
Acquired pellicle formation Early colonisation Late colonisation and maturation
52
How does plaque become calcus
Plaque becomes mineralised by calcium and phosphate ions from saliva Inorganic calcium phosphate crystals grow within the plaque matrix and enlarge until the plaque is mineralised