The handoff between chair and lab
Prosthetic work moves between clinic and laboratory, and every handoff depends on an approval, a destination and a clear instruction. A field study in Taiwan recorded what went wrong when those handoffs ran on paper.
Impressions are taken at the chair. The case is boxed with a paper slip, signed, and sent to the laboratory. When the work comes back it is checked, perhaps adjusted, and sent on again. Each time it moves, it has to carry the same things with it: who approved it, where it is going, and exactly what the technician should do.
When one of those is missing, the work does not stop. It waits, or it goes to the wrong place, or it arrives without what the next person needs.
What the study followed
Tsai and colleagues ran a prospective field study at two branches of a medical centre in Taiwan, following prosthodontic work as it was transferred between clinic and laboratory from May 2022 to September 2023. Of 154 eligible transfers, 70 went through a paper process and 84 through a digital one. The study was published in DIGITAL HEALTH in 2026.
In the paper process at those two Taiwanese branches, between 2022 and 2023, 37 of the 70 transfers, or 52.9%, were completed after the planned date. Alongside the delays, the authors described work returned without approval in time, work sent to the wrong branch, and work instructions that were missing or unclear.
Approval, routing, instructions
These failures have something in common. Each happens between people rather than at the chair or the bench: an approval that was not given in time, a delivery that went to the wrong branch, an instruction that did not say enough. Read carefully, the finding documents difficulty coordinating between units in a real clinical process.
It is worth being fair to paper. A slip travels with the case, needs no login, and can be read by whoever opens the box. Its weakness is the other side of that strength: the information travels only with the work. When the work is at the wrong branch, so is everything written about it.
A digital system can fail in exactly the same way if the approval, the destination or the instruction never goes into it.
What the comparison cannot carry
Between 2022 and 2023, at the same two branches in Taiwan, the study also followed 84 transfers handled through a digital process, and compared the two arms. It is tempting to read any difference between them as the effect of going digital. That would claim too much. The comparison is not causal proof: each arm had its own team, and work was allocated according to staffing arrangements.
There are further limits. Only transfers with adequate date data were included, everything was measured at a single medical centre, and the outcome is the date of the transfer, not the result of treatment. Read that way, the paper arm is still useful on its own terms: a careful record, from a working clinic and laboratory, of where a handoff tends to slip.
What travels with the work
For a private practice, the question is practical. When a case leaves the chair, do the approval, the destination and the full instructions go with it, somewhere the next person can find them without having to ask? And when it comes back, is it clear what still needs approval, and from whom?
Keeping those answers where the work happens is the kind of quiet help SoliumOS is built to give. It prepares the administrative side of the work, inside the clinic's own cloud, and leaves clinical decisions, and the final say on everything it prepares, with the team.
Sources
- Tsai et al. (2026). Development of a prosthodontic workflow tracking system to improve delivery efficiency in clinic–laboratory transfers. DIGITAL HEALTH, 12.