Effect of Maxillary Third Molar Extraction vs. Non-extraction on Distalization of First Molars in a Group of Adolescent Patients

Future University in Egypt

Status: Completed

Conditions: Class II Malocclusion

Treatments: Procedure: Distalization without upper third molars extraction; Procedure: Distalization combined with upper third molars extraction

Study type: Interventional

Funder types: Other

Identifiers

NCT05647720

FUE.REC(14)/7-2019

Details and patient eligibility

About

There is a scarcity in literature regarding the influence of maxillary third molar on distalization . This study aimed to compare the influence of unerupted maxillary third molars and their extraction on the bilateral distalization of upper first molars using the infra-zygomatic gear distalizer

Full description

Maxillary molar distalization is one of the non-extraction modalities for treating class II malocclusion. When distalizing maxillary molars In adults, it is not a problem to extract fully erupted third molars, and it may even be suggested that the extraction site may accommodate distalization. On the contrary, adolescents usually have unerupted third molars with partially formed roots, rendering the surgical extraction more difficult and traumatic. The necessity of surgically extracting upper third molar buds before distalization remains questionable. Therefore, this study was conducted to three-dimensionally assess the impact of maxillary third molar presence on distalizing maxillary molars in adolescent patients having Class II malocclusion.

Enrollment: 22 patients

Sex: Female

Ages: 16 to 19 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Adolescent patients aged 16-19 years
• skeletal Class I
• bilateral Class II molar relationship. defined by at least an end-to-end molar relationship.
• normal vertical growth pattern.
• full permanent dentition with unerupted upper third molars.

Exclusion criteria

• skeletal Class II or Class III relationship.
• past orthodontic treatment.
• poor oral hygiene.
• Increased vertical dimension.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

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22 participants in 2 patient groups

Third molar extraction group

Experimental group

Description:

After surgical extraction of unerupted upper third molars, the maxillary first molars were distalized using the infra-zygomatic gear distalizer, which is anchored to infra-zygomatic mini-implants inserted in the infra-zygomatic crest.

Treatment:

Procedure: Distalization combined with upper third molars extraction

Third molar presence group

Experimental group

Description:

Without extraction of unerupted upper third molars, the maxillary first molars were distalized using the infra-zygomatic gear distalizer, which is anchored to infra-zygomatic mini-implants inserted in the infra-zygomatic crest.

Treatment:

Procedure: Distalization without upper third molars extraction