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Extrusion of impacted mandibular second molar using removable appliance.

Karthikeyan MK, Prabhakar R, Saravanan R, Vikram NR, Kumar RV, Prasath RE - J Pharm Bioallied Sci (2014)

Bottom Line: The purpose of this article is to review the principles of case management of impacted mandibular molars and to illustrate their potential to respond well to treatment.Although the scope of treatment may be influenced by the patient's age, past dental history, severity of impaction, dentoalveolar development, and root form, the case reports demonstrate the inherent potential for good treatment outcome even in the most unfavorable circumstances.

View Article: PubMed Central - PubMed

Affiliation: Department of Orthodontics, Thai Moogambigai Dental College and Hospital, Chennai, Tamil Nadu, India.

ABSTRACT
The purpose of this article is to review the principles of case management of impacted mandibular molars and to illustrate their potential to respond well to treatment. Although the scope of treatment may be influenced by the patient's age, past dental history, severity of impaction, dentoalveolar development, and root form, the case reports demonstrate the inherent potential for good treatment outcome even in the most unfavorable circumstances.

No MeSH data available.


Related in: MedlinePlus

(a) Preoperative, (b) 2 months after activation, (c) 4 months after activation, and (d) Postoperative
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Figure 4: (a) Preoperative, (b) 2 months after activation, (c) 4 months after activation, and (d) Postoperative

Mentions: Removable appliance was the priority of choice due to the advantage of higher anchorage control and ease in design of the appliance.[2] Thus, a removable appliance was fabricated for mandibular arch with bilateral triangular clasp one in between 42, 43 and other in between 33, 34. Adams clasp one on the premolar on the fourth quadrant (45) and other on the molar in the third quadrant (36). A custom made retraction spring with helix made with 17 × 25 titanium molybdenum alloy (TMA) wire constructed with the acrylic material extending to the adams clasp of 46. The design of spring was simple. A horizontal arm made of TMA wire with a posterior helix on the distal end tied using a ligature wire to the bracket on the impacted 47[5] and an anterior helix with two turns present at the buccal region of 46, from the helix[6] of the wire extends into the acrylic along with crossover arm of adams clasp (on 45) to the lingual plate, finishing with a retention tag. The horizontal arm from the anterior helix to the posterior helix measures about 20 mm and the posterior helix with two full turns of 3 mm diameter is placed 1.5 cm above the bonded attachment thus, the force exerted when the posterior helix is tied to the attachment causes an extrusion force of 100 g/cm2 on the impacted 47 [Figures 2–4].


Extrusion of impacted mandibular second molar using removable appliance.

Karthikeyan MK, Prabhakar R, Saravanan R, Vikram NR, Kumar RV, Prasath RE - J Pharm Bioallied Sci (2014)

(a) Preoperative, (b) 2 months after activation, (c) 4 months after activation, and (d) Postoperative
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4157274&req=5

Figure 4: (a) Preoperative, (b) 2 months after activation, (c) 4 months after activation, and (d) Postoperative
Mentions: Removable appliance was the priority of choice due to the advantage of higher anchorage control and ease in design of the appliance.[2] Thus, a removable appliance was fabricated for mandibular arch with bilateral triangular clasp one in between 42, 43 and other in between 33, 34. Adams clasp one on the premolar on the fourth quadrant (45) and other on the molar in the third quadrant (36). A custom made retraction spring with helix made with 17 × 25 titanium molybdenum alloy (TMA) wire constructed with the acrylic material extending to the adams clasp of 46. The design of spring was simple. A horizontal arm made of TMA wire with a posterior helix on the distal end tied using a ligature wire to the bracket on the impacted 47[5] and an anterior helix with two turns present at the buccal region of 46, from the helix[6] of the wire extends into the acrylic along with crossover arm of adams clasp (on 45) to the lingual plate, finishing with a retention tag. The horizontal arm from the anterior helix to the posterior helix measures about 20 mm and the posterior helix with two full turns of 3 mm diameter is placed 1.5 cm above the bonded attachment thus, the force exerted when the posterior helix is tied to the attachment causes an extrusion force of 100 g/cm2 on the impacted 47 [Figures 2–4].

Bottom Line: The purpose of this article is to review the principles of case management of impacted mandibular molars and to illustrate their potential to respond well to treatment.Although the scope of treatment may be influenced by the patient's age, past dental history, severity of impaction, dentoalveolar development, and root form, the case reports demonstrate the inherent potential for good treatment outcome even in the most unfavorable circumstances.

View Article: PubMed Central - PubMed

Affiliation: Department of Orthodontics, Thai Moogambigai Dental College and Hospital, Chennai, Tamil Nadu, India.

ABSTRACT
The purpose of this article is to review the principles of case management of impacted mandibular molars and to illustrate their potential to respond well to treatment. Although the scope of treatment may be influenced by the patient's age, past dental history, severity of impaction, dentoalveolar development, and root form, the case reports demonstrate the inherent potential for good treatment outcome even in the most unfavorable circumstances.

No MeSH data available.


Related in: MedlinePlus