Table 1 Modified USHPS criteria for evaluation of clinical parameters.
From: A retrospective cohort study on 3D printed temporary crowns
Alpha | Bravo | Charlie | Delta | |
|---|---|---|---|---|
Surface structure | Sound | Rough | – | – |
Anatomical form | Sound | Loss of printable material | Loss of material extending to the tooth surface | Complete or partial (> 50%) loss of the restoration |
Marginal integrity | Sound | Positive / negative step, removable by finishing | Negative step, not removable by finishing | Strong negative step, not removable in major parts |
Marginal discoloration | None | Slight discoloration, removable by finishing | Discoloration, localized, not removable | Strong discoloration in many parts, not removable |
Secondary caries | None | Caries present | – | – |
Marginal inflammation | None, no pockets > 3mm, no bleeding | Slight, no pockets > 3mm, bleeding | Moderate, pockets < 4-5mm, bleeding | Severe, pockets ≥ 6mm, bleeding |
Color stability | No change | Change of color in comparison to baseline | – | – |
Color match | Sound | Imperceptible at talking distance | Perceptible at talking distance | Total mismatch |
Postoperative sensitivity to air | None | Moderate | Severe | – |
