Lec 12 Root Resection Flashcards
A procedure in which the root is removed, irrespective of what is done with the crown.
root resection
The resection of a root also may be called a _____________.
radectomy
Removal of a root without disturbing the crown.
root amputation
A _______ is a procedure in which the tooth is separated through the crown and the furcation, producing two essentially equal-sized teeth.
hemisection
Indications:
- One or more roots of a molar may be removed to eradicate areas of the tooth that create problems in the maintenance of ______________.
- One or more roots can be eliminated because of an invasion or uncovering of the furcation by severe ______________.
- The severe ______________ around one root may also necessitate the removal of a root.
- Can aid in reestablishing _____________ by changing furcation anatomy to facilitate cleaning.
- May be performed to salvage teeth with ___________ problems.
- A tooth that has other sound roots can be saved by re- moving a root that has ________ or one afflicted with untreatable __________ that extends into it.
- Done where roots of two adjacent teeth are in such close proximity that embrasure space is __________.
- good hygiene and plaque control
- vertical bone loss
- loss of bone or attachment
- furcation control
- endodontic
- fractured; caries
- obliterated
The concept of _______________ may simplify the periodontal treatment of an entire quadrant. It also reduces the risk of extension of the lesion to the surviving roots of that tooth or to neighboring teeth.
periodontal strategic extraction
In 58% of the maxillary and mandibular first molars examined by Bower, furcation entrances were ________(narrower/wider) than the width of the smallest curettes available.
In such case, _________ may be compromised by instrument inaccessibility, and resection may be the only way to create an area that can be adequately cleaned.
- narrower
- maintenance
Contraindications:
1. ____________ or those that approximate other roots of the same tooth.
2. If the furcation is too ___________, roots cannot be resected because there will be too little bone left to support the remaining roots.
3. Cannot be done on maxillary first premolars.
4. If excessive ___________ has been lost uniformly around all of the roots.
5. If the root that is to be kept cannot be successfully treated __________.
- Fused roots
- Too far apical
- Maxillary 1st premolars
- [Lost of] Alveolar support
- Endodontically
The furcation must be in the coronal _________ to perform a hemisection on a mandibular molar.
coronal one-third
As the level of bone is lowered by periodontal disease, the surface area of ______________ diminishes.
periodontal attachment
It is usually desirable to complete __________ BEFORE removing the root because a root canal will be transected during the surgery.
endodontic treatment
However, often it is not possible to adequately evaluate the extent of furcation involvement until the flap has been reflected to permit a __________ examination.
direct visual
The pulp should be protected by a ____________, and endodontic therapy should be scheduled as soon as possible.
provisional restoration
The resection is begun with a ____________ to cut through the vault of the furcation.
long, thin diamond
All traces of the resected root are removed at the time of surgery. NO ____________ of the furcation vault should be left. They will act much as overhanging crown margins would, interfering with plaque removal and increasing tissue inflammation.
No vestigial remnants
