74:(IAN) following coronectomy, a significantly lower occurrence compared to the 5.10% observed after conventional extraction procedures. Patients undergoing coronectomy are anticipated to experience easier recovery from IAN deficits compared to those undergoing extractions. Limited studies indicate a 100% recovery rate in coronectomy patients, whereas only 66% of patients undergoing extraction recover within one month. 62.2% of the roots will migrate post-coronectomy, erupting away from the inferior alveolar canal. This makes extraction of the remaining roots safer.
20:
207:
Verbal consent must be attained by the surgeon prior to the procedure of a coronectomy. Additionally consent must be gained if removal of the roots is required due to mobilisation. The patient should be informed of early and late infection meaning the roots may need removing.
199:) is taken in addition to the plain film. The justification of additional radiography can be justified by the surgeon as it allows them to gain further information regarding the tooth roots and the inferior alveolar canal should the roots be mobilised when transecting.
194:
to be assessed. The plain film can be assessed to identify the tooth as high risk If there is; loss of the lamina dura, darkening of the canal and grooving of the root. If the mandibular third molar is deemed to be high risk, a cone beam CT
269:
If the patient presents with dry socket, irrigate with chlorohexidine mouthwash and place resorbable dressing such as
Alvogyl. If the patient has recurrent infection, consideration to remove the roots should be noted.
278:
In a few cases the remaining roots may erupt which can minimise the morbidity of the inferior alveolar nerve, however the roots may be in close contact to the inferior alveolar nerve requiring surgical separation.
39:
of the lower wisdom tooth, whilst keeping the roots in place in healthy patients. This option is given to patients as an alternative to
150:
Patients who are predisposed to local infection for example if they have undergone radiotherapy in the area they may have poor healing.
385:
Leung, YY; Cheung, LK (December 2009). "Safety of coronectomy versus excision of wisdom teeth: a randomized controlled trial".
221:, 1:10000ppm of epinephrine. This can be supplemented with an inferior dental block using 2% lidocaine, 1:80000 epinephrine.
554:
196:
98:
Coronectomy should be considered if there are signs that the patient is at a high risk of nerve damage during extraction:
245:
Remaining roots should sit a few millimeters below the alveolar crestal bone level, where the pulp should not be touched.
255:
mouth wash or gel can be prescribed, however antibiotics should not be prescribed unless there is pericoronal infection.
82:
There is a 5% chance of failure of coronectomy, the root will become mobilized during transection. In 5% of the cases,
19:
236:
The crown can be fractured off the roots using a small elevator such as coupland number 1 or straight
Warwick James.
455:
O'Riordan, Brian C. (September 2004). "Coronectomy (intentional partial odontectomy of lower third molars)".
420:
O'Riordan, Brian C. (September 2004). "Coronectomy (intentional partial odontectomy of lower third molars)".
191:
71:
44:
530:
522:
472:
437:
402:
367:
359:
324:
176:
40:
239:
Care must be taken to not apply too much torque to the tooth so minimising root mobilisation.
224:
The third molar is exposed by raising a buccal triangular mucoperiosteal fold thickness flap.
512:
464:
429:
394:
351:
314:
83:
102:
Lower wisdom tooth is shown to be close to the inferior alveolar canal radiographically:
62:
The risk of altered sensation is significantly lower than convention surgical removal of
548:
500:
252:
36:
534:
28:
468:
433:
398:
233:
This cut is lateralised to create a horizontal groove below the level of the ACJ.
355:
112:
87:
47:, and so used to prevent damage to the nerve which may occur during extraction.
227:
A fissure bur is used to create a buccal gutter of bone and to expose the ACJ.
118:
63:
56:
363:
172:
The patient should be aware of the potential risks of the procedure such as:
70:. Approximately 0.65% of individuals encounter postoperative deficits in the
517:
387:
Oral
Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics
319:
302:
218:
526:
476:
457:
Oral
Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontics
441:
422:
Oral
Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontics
406:
371:
328:
342:
Sarwar, Humera; Mahmood-Rao, Sameer (2015). "Coronectomy; good or bad?".
217:
Long buccal infiltration and anterior buccal infiltration both with 4%
67:
23:
Wisdom tooth with close association to the inferior alveolar nerve.
230:
Drill directly into pulp at intersection of buccal groove and ACJ.
18:
190:
A plain film radiograph allows the proximity of the tooth to the
147:
Medically compromised patients for example immunocompromised
43:
when the wisdom teeth are in close association with the
248:Then follow up with closing the area and suturing.
141:Tooth is mobile or becomes mobile during procedure
128:Tooth vital, caries/pathology free and non-mobile
242:Use a rose head bur to remove enamel fragments.
35:is a treatment option involving removing the
8:
144:Tooth is horizontal or distoangular impacted
105:Signs of narrowing or diversion of the canal
516:
318:
108:Roots are darkened/ Canal is interrupted
288:
90:pockets which will lead to infection.
7:
494:
492:
490:
488:
486:
296:
294:
292:
14:
59:compared with full extraction.
16:Removal of the crown of a tooth
153:Caries or persistent infection
1:
469:10.1016/j.tripleo.2003.12.040
434:10.1016/j.tripleo.2003.12.040
399:10.1016/j.tripleo.2009.07.004
181:Secondary surgical procedures
260:Post operative complications
499:Renton, Tara (2012-04-13).
356:10.12968/denu.2015.42.9.824
301:T. Renton (13 April 2012).
117:Juxta-apical region on the
571:
125:Not medically compromised
86:remnants will form deep
518:10.1038/sj.bdj.2012.265
320:10.1038/sj.bdj.2012.265
192:inferior alveolar canal
163:Preoperative assessment
72:Inferior alveolar nerve
45:inferior alveolar nerve
505:British Dental Journal
501:"Notes on coronectomy"
303:"Notes on coronectomy"
27:When extracting lower
24:
22:
555:Dentistry procedures
212:Operative technique
25:
133:Contraindications
562:
539:
538:
520:
496:
481:
480:
452:
446:
445:
417:
411:
410:
382:
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375:
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111:Interruption of
55:Reduces risk of
570:
569:
565:
564:
563:
561:
560:
559:
545:
544:
543:
542:
498:
497:
484:
463:(3): 274, 280.
454:
453:
449:
428:(3): 274, 280.
419:
418:
414:
384:
383:
379:
341:
340:
336:
313:(7): 323, 326.
300:
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290:
285:
276:
267:
262:
251:Post operative
214:
205:
188:
170:
165:
160:
138:Non-vital tooth
135:
96:
80:
53:
17:
12:
11:
5:
568:
566:
558:
557:
547:
546:
541:
540:
511:(7): 323–326.
482:
447:
412:
377:
350:(9): 824–828.
334:
287:
286:
284:
281:
275:
272:
266:
263:
261:
258:
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256:
253:chlorohexidine
249:
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109:
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95:
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79:
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52:
49:
15:
13:
10:
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6:
4:
3:
2:
567:
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550:
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528:
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344:Dental Update
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308:
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297:
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120:
116:
114:
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107:
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78:Disadvantages
77:
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73:
69:
65:
60:
58:
50:
48:
46:
42:
38:
34:
30:
21:
508:
504:
460:
456:
450:
425:
421:
415:
393:(6): 821–7.
390:
386:
380:
347:
343:
337:
310:
306:
277:
268:
206:
189:
171:
97:
81:
61:
54:
32:
29:wisdom teeth
26:
186:Radiography
168:The patient
113:lamina dura
94:Indications
88:periodontal
33:coronectomy
283:References
177:Dry socket
119:radiograph
64:mandibular
57:neuropathy
51:Advantages
41:extraction
364:0305-5000
219:articaine
158:Procedure
549:Category
535:42123315
527:22498530
477:15356463
442:15356463
407:19782621
372:26749790
329:22498530
84:follicle
203:Consent
533:
525:
475:
440:
405:
370:
362:
327:
68:molars
66:third
531:S2CID
265:Early
37:crown
523:PMID
473:PMID
438:PMID
403:PMID
368:PMID
360:ISSN
325:PMID
274:Late
197:CBCT
513:doi
509:212
465:doi
430:doi
395:doi
391:108
352:doi
315:doi
311:212
307:BDJ
551::
529:.
521:.
507:.
503:.
485:^
471:.
461:98
459:.
436:.
426:98
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401:.
389:.
366:.
358:.
348:42
346:.
323:.
309:.
305:.
291:^
31:,
537:.
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479:.
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444:.
432::
409:.
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374:.
354::
331:.
317::
195:(
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