A poor scan can\nlimit the patient’s diagnosis and treatment design, therefore a good scanning strategy\nis primordial to avoid possible errors.<\/p>\n\n\n\n
Some of the most common errors are usually:<\/strong><\/p>\n\n\n\n \u00b7 Inaccuracy of the scan in bridges 3Shape, one of the most significant providers of intraoral scanners on the market, recommends following this scan protocol with 5 simple steps for perfect results using its TRIOS scanner. <\/p>\n\n\n\n The scan path\nconsists of 3 sweeps to guarantee good data coverage of all the surfaces: occlusal<\/strong>, lingual<\/strong> and buccal<\/strong>.<\/p>\n\n\n\n The occlusal sweep<\/strong> always comes first. It\nshould start at the first molar (if it is an antagonist) or the preparation\n(for scanning gums before collapse due to traction). Scan and wait 3 to 5\nclicks before moving the scanner constantly and slowly 0 to 5 mm above the\nteeth.<\/p>\n\n\n\n Ensure you cover\nthe lingual and labial sides, moving slowly as you scan the first central\nsweep, as the central teeth require more attention span than the molars.<\/p>\n\n\n\n Step 1<\/strong>: Start with the lower quadrant of the antagonist<\/p>\n\n\n\n 1<\/strong>: Start with the antagonist. Start directly at the occlusion (first molar), then sweep along the occlusion. Step 2<\/strong>: Continue with upper quadrant of the preparation<\/p>\n\n\n\n 1: Start directly at the occlusion (first molar), then sweep along the occlusion to the preparation. \u00b7 Go to the occlusal side of the preparation. 3<\/strong>: Continue sliding along the occlusion. <\/b><\/span> Step 3<\/strong>: Continue along the lower complete arch of the antagonist. <\/p>\n\n\n\n 1<\/strong>: Start directly at the occlusion (first molar), then sweep along the occlusion. Move the scanner slowly when passing over the central teeth. <\/b><\/span> Step 4<\/strong>: Now it is the turn of the complete upper arch of the preparation. <\/p>\n\n\n\n 1<\/strong>: Start directly at the occlusion (first molar), then sweep along the occlusion to the preparation. Move the scanner slowly when passing over the central teeth. \u00b7 Go to the occlusal side of the preparation. 3<\/strong>: Continue sliding along the occlusion. <\/b><\/span> Step 5<\/strong>: Finally, scan the bite<\/strong>.<\/p>\n\n\n\n 1<\/strong>: Insert the tip of scanner into the patient’s mouth on the buccal side of the molars. +Bonus Track:<\/strong><\/p>\n\n\n\n \u00b7 The greatest challenge when scanning is controlling the soft tissue, as it can confuse the scanner, slowing or even stopping the scan. If you need more\ninformation about how scan correctly with TRIOS by 3Shape, you can consult the\nfollowing video:<\/p>\n\n\n\n
\u00b7 Insufficient detail along the margin lines
\u00b7 The scan stopping due to broken teeth
\u00b7 Spending too long on the scan <\/p>\n\n\n\n![\"\"](\"https:\/\/blog.avinent.com\/wp-content\/uploads\/sites\/9\/2021\/06\/Imagen1-1024x560.png\")
A good scanning strategy is primordial to avoid possible errors.<\/h1>\n\n\n\n
![\"\"](\"https:\/\/blog.avinent.com\/wp-content\/uploads\/sites\/9\/2021\/06\/Imagen2.png\")
<\/figure><\/div>\n\n\n\n
2<\/strong>: Continue along the lower jaw. Rotate 45-90\u00ba toward the lingual side and slide up to the second molar.
3<\/strong>: Rotate toward the buccal side and complete the sweep.<\/p>\n\n\n\n![\"\"](\"https:\/\/blog.avinent.com\/wp-content\/uploads\/sites\/9\/2021\/06\/Imagen3.png\")
<\/figure><\/div>\n\n\n\n
2<\/strong>: Scan the preparation:<\/p>\n\n\n\n
\u00b7 Rotate toward the palatine side.
\u00b7 Rotate toward the buccal side.
\u00b7 Rotate almost 90\u00ba to obtain a greater angle for the distal and mesial contact points.
\u00b7 Rotate to the occlusal again. <\/p>\n\n\n\n
4<\/strong>: Rotate 45-90\u00ba toward the buccal side and complete the sweep on one side of the preparation.
5<\/strong>: Roll toward the palatine side and complete the sweep.<\/p>\n\n\n\n![\"\"](\"https:\/\/blog.avinent.com\/wp-content\/uploads\/sites\/9\/2021\/06\/Imagen4.png\")
<\/figure><\/div>\n\n\n\n
2<\/strong>: Rotate 45-90\u00ba toward the lingual side and slide up to the second molar. Use the tip to keep the tongue away.
3<\/strong>: Rotate toward the buccal side and complete the buccal sweep. <\/p>\n\n\n\n![\"\"](\"https:\/\/blog.avinent.com\/wp-content\/uploads\/sites\/9\/2021\/06\/Imagen6.png\")
<\/figure><\/div>\n\n\n\n
2<\/strong>: Scan the preparation: <\/p>\n\n\n\n
\u00b7 Rotate to the palatine side
\u00b7 Rotate toward the buccal side.
\u00b7 Rotate almost 90 degrees to obtain a better angle for the distal and mesial contact points.
\u00b7 Rotate to the occlusal again. <\/p>\n\n\n\n
4<\/strong>: Rotate 45-90\u00ba toward the buccal side and complete the sweep on one side of the preparation.
5<\/strong>: Roll toward the palatine side and complete the sweep.
6<\/strong>: Complete the scan on the other side of the preparation, with an occlusal sweep first.
7<\/strong>: Make the buccal sweep.
8<\/strong>: Make the palatine sweep. <\/p>\n\n\n\n![\"\"](\"https:\/\/blog.avinent.com\/wp-content\/uploads\/sites\/9\/2021\/06\/Imagen7.png\")
<\/figure><\/div>\n\n\n\n
2<\/strong>: Ask the patient to bite down firmly, and start to scan at the most distal position, moving gradually forward.
3<\/strong>: Align the scan area in the bite to see 50\/50 of the upper and lower teeth. Keep scanning until the two scans fit together and the mandibles are aligned with the blue bite.
4<\/strong>: The scan must cover at least 3 or 4 teeth for a perfect alignment.
5<\/strong>: For a full-arch examination, repeat steps 1 to 4 for the opposite side. <\/p>\n\n\n\n
\u00b7 In the case of multiple preparations, focus on scanning the preparations before the gums collapse. If the preparations are placed nearby, you can scan in one, but if they are more separated, the retraction agent can remove 2 to 3 teeth at the same time, scanning these areas before moving to the next and repeat the procedure. <\/p>\n\n\n\n