exam 2- chapter 15, 16 and some of 14 Flashcards
what are the symptoms of pericoronitis?
swelling of the operculum and/or other associated gingiva, redness, and extreme pain.
The tissue may be so swollen that it interferes with mastication.
Trismus (muscle spasm) may also occur.
The patient may have a fever.
Purulent exudate occurs in approximately one half of the patients with pericoronitis.
what are other types of implants that are used and may have been placed in an older time?
subperiosteal and transosteal
this is a custom made cast framework that is placed beneath the periosteum over the alveolar bone
subperiosteal implant
when is immediate implant placed?
at time of extraction
how is a gingival abscess treated?
must be drained and irrigated..
warm salt water rinses are recommended for post-op therapy
after treatment scaling and root planning is performed
An increased rate of bone growth and an increased amount of surface contact with bone:
Allows for better transfer of forces to bone.
Facilitates earlier loading, which is the placement of restorations on the implants.
Permits better success in areas with poor bone quality.
what instruments can be used safely around implants?
plastic, nylon, titanium, graphite and gold plated curettes and air abrasive
dental implants with the highest success rate are made of
titanium
pockets that extend epically beyond the crest of the bone are
infrabony pockets
reversible inflammatory reaction in the soft tissues surrounding an implant.
Peri-implant mucositis
what are the types of endossesous implants?
blade and root form type
in this type of abscess, pulpal infection to a tooth can spread to the pulp from an adjacent infected tooth through the lateral canals
periapical abscess
inflammatory reactions that affect soft and hard tissues around the implant, leading to the loss of supporting bone.
Peri-implantitis
what bacteria are associated with NUG?
large proportion of spirochetes and gram-negative organisms.
where are gingival abscesses found?
found on the margin of the gingiva and not associated with any abnormality of deeper tissues
this type of implant is placed within the bone
endosseous implants
how are gingival fibers in health - teeth vs implants?
teeth- inserted into supracrestal root cementum
implants- fibers arranged parallel to implant
what are the causes of early implant failure?
failure to achieve osseointegration, inherent host tissue factors, bacterial contamination of wounds, poor surgical technique, and instability of the implant
when are follow ups suggested for implants?
6, 12, and 36 months and then every 2-3 years after..
what is the term for an abscess that is found on the marginal gingiva and is not involved in the deeper periodontium
gingival abscess
patients with implants may require special instructions and devices for plaque biofilm control because the shapes of the fixtures, abutments and prosthesis can be very complex
both the statement and the reason are correct and related
Immediately providing a fixed provisional implant-supported crown after implant placement is termed
immediate loading
what is criteria for implant success?
- no peri implant radiolucency
- absence of mobility
- bone loss not greater than one third of implant
- provide functional service for 5 years in 85 percent of cases in the anterior maxilla and 90 percent in anterior mandible. after 10 years, 80 percent success in the maxilla and 85 percent in mandible
- absence of persistent or irreversible signs or symptoms such as pain, infection, neuropathies, parasthesia, and violation of the mandibular canal
- bone loss <0.2 mm annually after first year of service
- implant design allows restoration satisfactory to patient and dentist
- absence of continuous marginal bone loss
- absence of persistent soft tissue complications
- probing depth <4 to 5 mm; bone loss <4 mm
- no mechanical failure
what is an indication of loss of integration and implant failure?
presence of mobility
the gap between the implant and socket wall
jumping distance
recall intervals for patients with implants can be the same as for patients without implants. implants tend to accumulate biofilm and calculu quickly, but these are easy for patients to remove
both are false
what should you consider when determining if an abscess is periodontal or periapical?
85% of the tooth pain is pulpal.. and 15% is periodontal
most periapically will test nonvital
periapical pain is sharp, severe, intermittent and difficult to localize
periodontal is usually constant, localized, and less severe
when is a late implant placed?
6 months or longer after extraction
periodontal pathogens associated with failing implants are similar to those found in periodontal disease around natural teeth. any signs and symptoms of periodontal inflammation should be addressed with thorough cleaning bad plaque biofilm control
both statements are true
what does probing around implants provide?
assessment of bleeding and pus
these are associated with pre-existing periodontal disease..may occur around any tooth in the mouth when the perio pockets becomes occluded, often as a result of foreign object
acute periodontal abscess
what symptoms are included with acute periodontal abscess?
swelling, deep red to blue discoloration of the tissue, sensitivity to pressure, mobility, tooth feels “high”
this type is either a screw or cylindrically shaped with different lengths, diameters and design characteristics…..provide osseous anchorage through the formation of a lattice between the implant surface and bone.
root form
placement of a restoration at the time of the implant surgery
immediate loading
pockets that are coronal to horizontal bone loss
suprabony pockets
the density of the cortical bone is….
3-4 times that of cancellous bone
what is the mobility of teeth vs implants?
teeth- physiologic as a function of PDL
implant- no pdl. Rigid fixation similar to that of functional ankylosis
where are subperiosteal implants used?
maxilla or mandible
this is an inflammation of microbial origin that is associated with accumulations of suppuration or purulence in periodontal tissues
periodontal abscess
what is the influence the rate of bone apposition and growth and the amount of bone-to-implant contact.
implant surface
this implant is no longer used today due to high number of failure
blade type
which modality is always acceptable for cleaning implant abutments?
rubber cap polishing
what is used to see changes in bone density?
tomography and digital subtraction radiographic techniques
how are periodontal abscesses characterized by?
swelling
pain
discomfort
these type of abscesses occur in disease free areas and may be related to a forceful inclusion of some foreign object to the area..
gingival abscesses
how is the gingival sulcus depth with teeth vs implants?
shallow with teeth
implants- depth dependent on implant type and prosthetic component length
what does the absence of the PDL around implants create?
rigid bone implant interface