Clear aligner treatment relies on precise digital scans to ensure optimal results. The following outlines the key reasons why bite, upper, and lower impressions (or STL scans) are required for any clear aligner software platform.
Bite Registration for Accurate Occlusion
Why the Bite Registration is Required:
Bite registration, whether scanned or physical, is crucial for correctly aligning the upper and lower arches in 3D space. Without it, the software cannot accurately replicate the patient's natural occlusion.
Result of Missing Bite:
Without proper bite data, the final aligner fit may be compromised, resulting in:
Poor occlusal contacts
Open bite
Excessive pressure on certain teeth, leading to discomfort or inefficiency in the treatment.
Opposing Arch for Full Arch Alignment
Why Upper and Lower Impressions Are Required Together:
Even if the treatment is focused on one arch, the opposing arch is essential for creating an accurate treatment plan. It serves as a reference for:
Overjet and overbite correction
Midline alignment
Posterior occlusion
Result of Missing Arch:
Without the opposing arch, the software cannot correctly simulate contact points or avoid inter-arch collisions, resulting in poor treatment outcomes.
Accuracy & Attachments
Importance of Proper Attachment Planning:
Attachments are placed on specific teeth to guide movements. Their placement is determined by factors such as:
Force vectors
Tooth movements in relation to opposing teeth
Result of Missing One Arch or Bite:
Without one arch or the bite, the software cannot estimate accurate force vectors for specific movements, especially for:
Intrusion/extrusion
Rotation in crowded segments
This can lead to improper treatment plans, delaying progress or leading to suboptimal results.
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