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# A supraerupted back tooth and replacement space

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## Why does the opposing tooth's position matter?

If a clinician has already described a back tooth as supraerupted, or over-erupted, a replacement-space discussion can make more sense when you read two supplied descriptions together: that tooth's position and the space goal at the opposing missing-molar site.

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## Start with the same site

An opposing molar is the back tooth across the bite from the missing-tooth site. In this explanation, the clinician has established its over-erupted position toward that site and separately supplied a replacement-space target there. Keeping the two descriptions together explains why this particular tooth position belongs in that particular discussion.

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## Supplied position

The molar opposite the missing-tooth site is described as having an over-erupted position toward that site.

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## Supplied space goal

A replacement-space target has been stated separately for that same missing-tooth site.

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## How the two statements fit

The first statement describes the opposing tooth's position at the same missing-tooth site for which the second statement names a space goal. Read together, they explain why the assessed position is relevant to that specific replacement-space purpose. The shared site connects the finding to the goal.

These statements do not quantify remaining clearance, establish that space is inadequate or show that correction is needed.

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## Height is one part of position

A vertical-position description can belong to a fuller explanation of tooth position. The authors discuss tipping and rotation alongside vertical migration. Those are possible assessed components, not findings automatically assigned to you. Your own explanation should reflect what has actually been assessed.

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## A position finding and a space target are different

The study tracked positions of molar cusp tips on the biting surface. That endpoint describes positional change across records. It did not measure the remaining room for someone's proposed restoration. A position finding can therefore be relevant to a supplied space goal without being a measurement of that remaining room.

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## Keep the evidence in context

Source context: this explanation draws on author background and discussion in a 2022 retrospective study at one Chinese hospital. It included 59 adults with 68 unopposed molars, all with periodontitis, seeking implant rehabilitation; their actual ages were 30–78. This was not a treatment comparison or a measurement of remaining restorative clearance.

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## Discuss an individually established orthodontic goal

At SMILE-FX®, continuing orthodontist responsibility connects individual findings, proposed goals and follow-up within full-service digital orthodontics with a clear-aligner focus. Dental and restorative decisions remain with the responsible dental team. [See how care is planned and reviewed](/about-this-guide).

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## Questions about current care

Already in treatment? Use your responsible treating team's supplied contact route and instructions for questions about your current plan.

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## Discuss your orthodontic goals in person

Optional, at the one SMILE-FX® studio in Miramar.

[Request a free in-person orthodontic consultation](https://www.smile-fx.com/lp/free-consult/?utm_source=supraerupted-tooth-guide&utm_medium=microsite&utm_campaign=smile-fx-guides)

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The team confirms the appointment and care arrangements. A request is not a confirmed appointment or clinical assessment. Case acceptance, records, any procedures and fees are confirmed individually.

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## Source and adaptation

Anqi Wang, Jie Cao, Haoyun Zhang, Bo Zhang, Gang Yang, Wenjie Hu, Kwok-Hung Chung.

Three-dimensional position changes of unopposed molars before implant rehabilitation: a short-term retrospective cohort analysis. BMC Oral Health, volume 22, article 562. Published 3 December 2022. © The Author(s) 2022.

[DOI: 10.1186/s12903-022-02619-y](https://doi.org/10.1186/s12903-022-02619-y) · [Original article](https://link.springer.com/article/10.1186/s12903-022-02619-y) · [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/).

We selected, simplified and reorganized the authors' narrative for this explanation. Numerical effect and treatment claims, source tables, images and other media are not used. Reference does not imply endorsement.

Published by SMILE-FX® Orthodontic & Clear Aligner Studio. One studio: 11225 Miramar Pkwy, STE B285, Miramar, FL 33025.

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