Incisor guidance and ectopic eruption /certified fixed orthodontic courses by Indian dental academy
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Incisor guidance and ectopic eruption /certified fixed orthodontic courses by Indian dental academy
- 2. INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com
- 3. “LOWER INCISOR CROWDING IN THE EARLY MIXED DENTITION” www.indiandentalacademy.com
- 4. SPECIFIC OBJECTIVES: 1. Know how to approach the problem of lingually erupting lower incisors. 2. Know when to assess a child patient’s tooth sizearch length relationship. 3. Identify when discing of lower cuspids is required. www.indiandentalacademy.com
- 5. SPECIFIC OBJECTIVES (cont): 4. Explain leeway space control and the role of the mandibular lingual arch in assisting lower incisor alignment. 5. Be able to design an appliance to improve lower incisor alignment. _____________________________________ REQUIRED READING: Preceding material in this Syllabus. www.indiandentalacademy.com
- 6. REQUIRED READING: (In manual) Article: Early Mixed Dentition Developmental Module Article: Management of lower incisor crowding in the early mixed dentition. T. Foley, G. Wright, S. Weinberger, Journal of Dentistry for Children, May-June, 1996, pp 169-174. www.indiandentalacademy.com
- 7. 1. Primate space 2. General spacing 3. Preservation of “leeway space” 4. Sequences of eruption 5. Tooth size and jaw in harmony www.indiandentalacademy.com
- 8. Crowding and protrustion of the incisors must be considered two aspects of the same thing: how crowded and irregular the incisors are reflects both how much room is available and where the incisors are positioned relative to the supporting bone. www.indiandentalacademy.com
- 9. Identify WHY incisor guidance is needed. List WHAT is to be considered. Indicate WHEN incisor guidance is appropriate. Suggest HOW incisor guidance is performed. www.indiandentalacademy.com
- 10. To help prevent orthodontic relapse. Prevent unnecessary periodontic problems. www.indiandentalacademy.com
- 11. Interdental spacing. Intercanine distance. Increase of the arch perimeter. Size ratio between the primary and permanent teeth. www.indiandentalacademy.com
- 21. 1° - 4 YEARS CROWDING NO SPACE 0-3 MM SPACE 3-6 MM SPACE > 6 MM SPACE PERMANENT - 10/10 7/10 5/10 2/10 0/10 B. C. LEIGHTON www.indiandentalacademy.com
- 24. Continue to observe the case. Disc primary teeth. Extract primary teeth. Refer to an orthodontist. www.indiandentalacademy.com
- 25. Those < 2mm. crowding may resolve into good alignment. (Profitt) www.indiandentalacademy.com
- 29. Those with 3 – 4 mm. arch crowding. The goal is to transfer the anterior crowding posteriorly into the leeway space. www.indiandentalacademy.com
- 34. When arch crowding is 4 to 9 mm. www.indiandentalacademy.com
- 35. The goal is improve incisor alignment (unraveling), perhaps preventing periodontal problems and improving post-orthodontic stabliity. www.indiandentalacademy.com
- 40. Most class I cases having more than 10 mm. crowding should be referred to an orthodontic specialist by general dentists and (perhaps paediatric dentists). www.indiandentalacademy.com
- 41. 7 years old 9 years old 14 years old Changes in the axial inclination due to the eruption of the maxillary anterior teeth (Broadbent, 1957). www.indiandentalacademy.com
- 44. Avoid unnecessary periodontal problems. Enhance the long term stability of orthodontic treatments. Involve more clinicians in guiding the developing dentition. www.indiandentalacademy.com
- 45. ECTOPIC ERUPTION AND SPACE REGAINING 2004-2005 www.indiandentalacademy.com
- 47. GENERAL OBJECTIVE: To discuss the problem of ectopic eruption generally. To discus the problem of ectopic eruption the canine and first permanent molar and its management. www.indiandentalacademy.com
- 48. SPECIFIC OBJECTIVES: 1. Define ectopic eruption. 2. Know the frequency of ectopically eruption first permanent molars. 3. Explain the reasons for ectopic eruption occurring with first permanent molars. 4. Distinguish between a reversible and non-reversible ectopic eruption. www.indiandentalacademy.com
- 49. SPECIFIC OBJECTIVES (continued): 5. Know methods for correcting ectopic molar eruption. 6. Explain why long term follow-up is needed for corrected ectopic eruption cases. REQUIRED READING Article: Weinberger, S., Wright, G., “The Unpredictability of primary molar resorption following ectopic eruption of permanent molars”, Journal of Dentistry for Children, Nov-Dec, 1987. www.indiandentalacademy.com
- 50. REQUIRED READING (continued) Article: Weinberger, S., “Correction of bilateral ectopic eruption of first permanent molars using a fixed appliance”, Pediatric Dentistry, Nov-Dec, 1992, Vol 14, No. 6 www.indiandentalacademy.com
- 67. Authors Year of study Country Number Of Children With Ectopic Eruption CHILDREN NUMBER PERCENT Cheyne & Wessels 1947 USA 500 9 2 Young 1957 USA 1,619 52 2 O'Meara 1962 USA 315 6 2 Pulver 1968 USA 831 26 3.1 Bjerklin & Kurol 1981 Sweden 2,903 126 4.3 Mackerle-Heporauto 1981 Switzerland 543 32 6 Kimmel et al 1982 USA 5,277 250 3.8 Kurol-1986
- 83. A ligature wire is passed through beneath the contact and then twisted tightly. www.indiandentalacademy.com
- 88. GENERAL OBJECTIVE: Diagnose and regain the space loss. www.indiandentalacademy.com
- 89. SPECIFIC OBJECTIVES: 1. Explain how space loss occurs in the posterior region. 2. Describe indications for space regaining in regards to the magnitude of space loss. 3. Describe the differences between maxillary and mandibular arch space regaining. 4. Describe indications for tipping and bodily tooth movement to regain the space. www.indiandentalacademy.com
- 90. SPECIFIC OBJECTIVES (continued): 5. List the diagnostic aids required prior to initiating space regaining. 6. Present the maximum amount of space that can likely be regained with removable appliances and the time for the treatment. 7. Describe the most commonly used appliances for space regaining, such as: (a) removable applicant with finger spring www.indiandentalacademy.com
- 91. SPECIFIC OBJECTIVES (continued): 7. (b) removable appliance with jackscrew (c) fixed appliance with coil spring (d) lip bumper REFERENCE: Proffit, Contemporary Orthodontics, 2nd ed., 1993, Chapter 13, pp. 382-387 www.indiandentalacademy.com
- 139. Thank you www.indiandentalacademy.com Leader in continuing dental education www.indiandentalacademy.com
Hinweis der Redaktion
- Mn Incisors tend to show relapsse more
- Arch perimeter - Upper jaw about 6mm lower jaw 4mm gained between 2 and 8 (85% of boys finished, 100% of girls by this time)
- Most of growth when central incisors erupting, then again when canines erupting
- **EXAM QUES: Which spacing is shown here… General spacing
- Primary & Freeway spacing? Leeway?
- Canine is a little outside and distal… helps create 1-2mm for incisors
- Primate(ry) spacing
- Canine spacing… if its almost 28mm, can almost guarantee that there’ll be no probs with crowding….<26mm , very questionable about whether there’ll be crowding
- Central incisors in nice pos’n
- 15%... Normal… two row teeth mouth pos’n of teeth - check if mobile… if so, then pretty much normal. If not, extract… two row teeth cannot be tolerated - called ‘guiding eruption’
- Primary spacing at 4 years, gives the likelihood of permanent crowding
- First arch preserv… is good restorative work
- Disc if around 4mm Extract primary canine if needed… do NOT do serial extractions!!!
- Wedge to protect
- ***EXAM: Where do you use varnish? Discing, often get into dentin, have to use varnish
- 3. If maxilla distal to cranial base …congenital probs And couple other reasons
- no two row teeth, as soon as diagnosed, extract
- Two row teeth, not ectopic eruption 1st perm M not supposed to resorb any tooth
- Lateral incisor being resorbed slightly, not ectopic, somewhat normal
- 70% of ectopically erupting teeth can self correct
- Lateral is blocked, not resorbing anything
- Canine erupting ectopically commonly in a mesial direction towards lateral and central…(up to 70% will self-correct) 99(?)% of time will erupt normally 94% of extraction of primary canine will help… whenever you see a primary canine, extract… around 10-11 Can also put on a removable appliance to help guide 2&3 is lateral… etc..
- Ectopic molar
- Normal molar
- ectopic
- Self correction of previously ectopically erupting molar
- Must monitor about 3months to give it a chance, then appliances if not erupting normally
- SSC
- Ligature wire
- Tooth separators
- Was only slightly ectopically erupting, but ended up becoming quite extensive by time film C was taken
- Child came on time, but you screwed up, so it needs to be extracted
- Removable appliances Kids often play and break them