perio 1 wk 4 ch 10 11 12 occlusal trauma abscesses
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Perio 1: Week 4
Chapter 10: Occlusal Trauma
Centric Occlusion
: defined as the maxillary intercuspation or contact of the max and mand teeth.
Centric relation
: is the most retruded (posterior) position of the jaw in relation to the maxilla in which
lateral movements of the jaw can be made.
Edward H. Angles classification system
is used to determine class of malocclusion
Malocclusion is a
contributory risk factor
for periodontal diseases
Prematurity (aka occlusal interference):
occurs when a tooth is hitting before all others when a patient
bites, such as when a restoration is too high or a tooth's super-eruption (extrusion) places it above the
line of occlusion.
Physiologic occlusion
: when a pt. is in malocclusion but is symptom-free and the dentition adapts to the
deviation.
Pathologic occlusion
: occurs when pt. show signs or symptoms of the occlusal disease such as wear
facets, attrition, abfraction, gingival trauma due to overbite/underbite, TMJ disorders etc
Occlusal trauma
(AKA occlusal disease); injury to the attachment apparatus (PDL, bone, cementum) as a
result of normal or excessive occlusal forces. When the forces applied to teeth exceed the reparative
abilities of the apparatus occlusal trauma results.
Occlusal disease can also affect
the TMJ, muscles of mastication, pulp tissue, and restorations.
Parafunctional habits
: nail biting, bruxism (grinding/clenching), tongue thrusting, thumb sucking,
chewing inanimate objects.
Bruxism causes
wear facets/attrition, cusp fractures, sensitivity, and tooth mobility
Tongue thrust or thumb sucking can cause
a class II division I malocclusion where the anterior max teeth
are flared outward with an open bite. Tongue thrust can also cause mouth breathing.
Glickman 1963 introduced the idea of codestruction
, saying occlusal trauma in the presence of
inflammation will accelerated the rate of inflammation/periodontal destruction. stating it alters the
pathway of inflammation and causes it to
spread more rapidly
straight from the gingiva to the PDL
causing vertical bone defects and infrabony pockets. So the progression of periodontitis is accelerated by
occlusal trauma.
What causes the vertical bone loss and mobility?
Heavy occlusal loads causing compression of PDL
fibers reduce blood flow, causing an increased rate of bone resorption. Excessive chronic occlusal forces
cause the PDL to widen because it can't keep up with the repairs- this causes more bone
resorption/vertical bone defects, PDL gets even wider to accommodate bone loss and results in
increasing tooth mobility.
Primary occlusal trauma
: damage to the attachment apparatus due to occlusal forces in a HEALTHY
periodontium.
Causes-
premature contacts (high fillings), parafunctional habits, malpositioned
tooth/teeth, periapical abscess causing extrusion of a tooth, orthodontic movement of teeth, a physical
blow, a removable partial denture clasp around an abutment tooth.
Secondary occlusal trauma
: results when normal or excessive occlusal forces cause injury in a
periodontium with reduced bone support.
The MOST common sign of occlusal trauma is increased tooth mobility
For the proper determination of occlusal disease
- tooth mobility must be assessed on 2 separate
occasions to see if its adapting or steadily worsening
CLINICAL FINDINGS:
Adapted mobility
- for example a tooth with high restoration causing premature contact will become
mobile to adapt to the occlusal forces and plateau (not become any worse)
Tooth hypermobility
DOES NOT cause gingival inflammation or increase CAL
Fremitus:
the vibrational movement of a tooth under occlusal function. Check by placing finger on tooth
while pt. bites.
Pain:
pain upon percussion, biting, and hypersensitivity are symptoms of occlusal trauma
pathologic migration
: a change in tooth position resulting from disruption of the forces that maintain it
in normal position-
is usually indicative of severe perio and secondary occlusal trauma. Results in
diastema, flaring or fanning of anterior or extrusion/supereruption
Attrition/wear facets
: wearing of occlusal/incisal surface, may be ground flat, dentin showing,
cracks/pits form on edges.
Temporalis and masseter may become chronically sore and cause headaches. Pain usually occurs upon
waking in the AM if a nighttime bruxer or chewing, pain usually emanates from the TMJ.
RADIOGRAPHIC FINDINGS:
Crestel funneling
: widening of the PDL seen at the coronal third of root. PDL space is the white
surrounding the lamina dura around the root
Vertical bone loss accompanied by widened PDL
Hypercementosis:
excessive cementum deposited on the apical part of root
With dental implants
, there is no PDL to adapt to occlusal force overloads. This is the main cause of
implant complications. The bond between the bone and implant abutment may be disrupted resulting in
bone loss and failure.
Treating occlusal trauma
: selective grinding, control of parafunctional habits, orthodontic teeth
movement, splinting, restorative procedures.
The objective of occlusal therapy
: is to control the direction, duration, magnitude and frequency of
excessive occlusal forces.
Occlusal treatment has been shown to reduce the progression of perio disease greatly
Splinting:
treatment of choice for pt. who has discomfort or mobility that interferes with chewing. Used
to connect multiple teeth with bone loss together for more support. Permits healing of the attachment
apparatus. PDL becomes narrower and mobility reduces.
Chapter 11: Abscesses
Gingival abscess
:
acute infection limited to the GM- characterized by localized painful edema at the
GM or papilla.
Etiology
- foreign object in the sulcus such as popcorn kernel, seeds, toothbrush bristle,
fish bones.
Onset
: sudden, rapid development in 24-48 hrs.
Treatment
: debridement of affected area
and salt water rinses every 2 hrs. for a week.
Considerations:
don’t inject local into infected site, may
spread it. Scaling establishes drainage thru crevice. Should resolve in 24-48 hrs.
Periodontal abscess
AKA lateral abscess:
the MOST common type. It’s a localized purulent nidus of
acute inflammation as a result of bacterial invasion into the gingival soft tissue wall of a pocket. May
cause destruction to the PDL and bone. Inflammation results in collagen destruction.
Contains:
bacteria,
their by-products, inflammatory cells, tissue breakdown products, and serum. Usually occurs in teeth
w/deep pockets or furcation.
These are part of the clinical course of the progression of periodontitis
Factors associated with periodontal abscess formation:
1. preexisting untreated periodontitis
2. an endodontic infection where there are lateral canals
3. furcation involvement
4. inadequate debridement was performed, so calc is still at the base of the pocket, but the coronal part
is clear and heals, occluding the sulcus and not allowing drainage
5.
patients with diabetes are more susceptible
Microbes found in a perio abscess resemble the microflora of those in chronic periodontitis
Cultivated from the exudate of the abscess is
mostly gram-negative anaerobic rods
The bacteria highly associated w/ this abscess formation
is P. gingivalis
The acute abscess
presents as a shiny, swollen, discolored mass on the gingiva or lateral aspect NEVER at
the GM. And the chief complaint of pt. developing one is pressure in the gums.
Clinically the tooth may:
be tender to percussion, mobile, deep probe depths, and edematous gingiva.
Shows radiographically as radiolucent area on lateral
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Treatment
: incision/drainage thru pocket, debridement, may include periodontal surgery or tooth
extraction. Antibiotics if lymphadenopathy or fever present.
Periapical abscess:
at the apex of a necrotic nonvital tooth, often heals following edno treatment.
May have a sinus track draining it. The track can be traced by taking an x-ray w/ a gutta percha point
within the sinus tract.
Signs:
tooth tender to percussion, tooth may be extruded from abscess at apex pushing it upward, No
pocket present usually. Tooth mobility possible
Origin:
pulp chamber
Location:
sinus tract below apex
Treatment:
RCT- no antibiotic if the tooth is nonvital. But yes, if fever/lymph involvement
Pericoronal abscess:
AKA pericoronitis. Localized infection involving the gingiva adjacent to a
partially erupted tooth, usually seen on mand. 3
rd
molars.
The
OPERCULUM
or gingival flap overlying the erupting tooth is red and edematous w/ debris collected
underneath. It will disappear once the tooth fully erupts or is extracted.
Gram-negative anaerobes involved
Signs
: trismus (lock jaw/limited opening) possible if infection spreads, difficulty swallowing, dull aching
pain, facial swelling, possible lymphadenopathy.
Origin:
gingiva
location:
partially erupted molar
Xray findings
: impacted molar
Treatment:
Irrigation w/ saline or iodine under flap to flush debris, antibiotics if fever/lymph. And
extraction of tooth if impacted
Primary Herpetic Gingivostomatitis
: condition of the oral mucosa characterized by a previous
herpes (HSV-1) infection.
Signs:
after a brief prodromal period of fever, headache, nausea, vomiting, and malaise, many small
blisters/vesicles form on the mucosa inside lower lip, hard palate and/or tongue. These break forming
yellowish-gray ulcers in groups surrounded by red halos (inflammation). Symptoms last 1-2 wks.
Transmission;
many acquire it thru direct contact like kissing a person w/ active recurrent lesions
Its important to differentiate between this and NUG:
one of the most important distinguishing factors
which is diagnostic for PHG is the presence of generalized acute gingivitis. The papilla are intact and not
necrotic. The gingiva is red and swollen. Submandibular lymphadenopathy is present.
Another differential diagnosis:
aphthous stomatitis (canker sores) occur ONLY on the attached gingiva
and pt. has history of recurrence
Treatment:
palliative. Rinse with xylocaine for pain, antipyretics like acetaminophen to reduce
fever/pain, antiviral drug Acyclovir.
Chapter 12: The DH process of care for pt. with perio disease
A
ssessment
D
iagnosis
P
lanning
I
mplementation
E
valuation
D
ocumentation
Subjective:
statements made by the patient
Objective:
direct measurements/recorded data of pt. and statements made by clinicians
The purpose of the DH process of care is
to provide a framework within which the individual needs of
the pt. can be met.
DH diagnosis
: the identification of an existing or potential oral health problem that the DH is
educationally qualified and licensed to treat.
Dental diagnosis VS. DH diagnosis
: A dental diagnosis gives a name to the disease, whereas the DH
diagnosis identifies the patient's actual or potential response to the disease process.
The purpose of the DH diagnosis
is to keep treatment planning centered on problems that are
responsive to DH interventions.
Planning
is the establishment of realistic goals and treatment strategies to facilitate optimal oral health
The DH care plan
: involves the development of written interventions for the pt. individual needs based
on data collected during the assessment. Must include recommended treatments, their alternatives, side
effects, sequences, and expected outcome. Must be signed by the patient (informed consent).
Interventions:
procedures carried out by DH to help pt. reach desired health goals
Describe aspects of a treatment plan:
After all data from the assessment phase has been analyzed and a DH diagnosis reached, a treatment
plan is devised tailored to that patient's individual needs. It is based on the data collected and the
patient's current or potential response to the disease process. It lays out the suggested sequence of
treatments, the cost, alternative options, possible side effects, and the predicted outcome. All of this
must be included and presented to the patient to obtain informed consent before proceeding to the
implementation phase. The treatment plan can consist of routine prophylaxis, quad scaling/root
planing, coronal polishing, application of fluoride or desensitizing agents, local anesthetic
administrations, whitening procedures as well as patient education and nutritional or tobacco
cessation counseling. It keeps the entire dental care plan in mind when sequencing said treatments
alongside work being performed by the dentist or other practitioners.