What PerioMechanics is

The short definition — the URL a search should attach to the name — lives at /periomechanics. This note is the essay form of the same claim.

The name

PerioMechanics is first-principles periodontology. The periodontium is not a frame around a tooth. Gingiva, cementum, periodontal ligament, alveolar bone: four tissues, one construction. They carry bite. They drink. Load arrives as a vector — a point, a magnitude, an angle — not as a vibe. Blood is a member of that construction, not a caption under a histology slide. Treat gums as wallpaper and you will plan as if wallpaper were the organ.

The methods are how you get past the slogan and into biology. Biomechanics names the load path. Fluid dynamics names the ligament as a hydro-mechanical tissue, not a dry spring. Perfusion theory names how far a graft can be asked to wait for a vessel. Finite-element analysis (FEA) is the teaching overlay that makes those sentences visible. Together they are a way into the depths of biology, not a replacement for it, and not a solver you can paste into a chart.

This site is a public teaching lab. I am Igor Kosmina, DMD, a periodontist at Polyclinic Breyer in Sisak, also freelance. The plates, the knobs, the notes are educational models. Not a medical device. Not diagnosis. Not a patient-specific simulation of a mouth I have not examined.

The name is the claim. First principles, then the picture, then the chair.

The synthesis

It is a synthesis of biomechanics and finite-element analysis of anisotropic tissues — tissues of different quality and stiffness. Tooth, periodontal ligament, bone, and gingiva are not one material. Those tissues are also defined by their perfusion, down to the minuscule gap of the periodontal ligament between essentially immovable bone and tooth. Out of that mechanics comes a biochemical environment. If force or pathology is present, molecular signaling happens; it changes what is wrong and where; that tissue signaling in turn changes the environment again. Treat the whole as one interacting system on differing levels — mechanics, perfusion, biochemistry, signaling — not as separate stories.

The Croatian wording of this definition is on /periomechanics; use the HR toggle.

What it is not

It is not a clinic portal. There is no booking widget, no dual-track menu, no shop window. If you want to write, the contact form opens a mail draft on your computer. The work is still at a chair in Sisak, and freelance.

It is not a product. There is no kit to buy and no certified output. The FEA plates are overlays on a teaching geometry. The simulator is a pair of knobs. The Codex is a public walkthrough of a full-mouth implantoprosthetic sequence — educational, not a device.

It is not a Wikipedia field yet. The term is being defined here, on this site, so that a search has something true to attach to the name. That is the point of this note, and of the short route at /periomechanics.

It is not peridynamics. Peridynamics is Stewart Silling's continuum-fracture theory from 2000: a nonlocal reformulation of solid mechanics, used for cracks in materials. The names share a prefix. They do not share a subject. PerioMechanics is periodontology. The organ is the periodontium. The methods are biomechanics, perfusion, and teaching FEA. If you arrived looking for Silling, you are in the wrong room.

How to read the lab

Pictures first. If you have been told "the gum" as if it were a gasket, start with the patient doors: what periodontitis is, and why gums recede. Short sentences. Clear plates. No login.

Then the models. The lab is six modules in order — each a plate, a thesis, and a sentence you can take to the chair. The simulator sits next to them. The Codex is the implantoprosthetic full-mouth sequence, taught in public.

Then the essays. The journal is chair language. Start with the periodontium as architecture if you want the construction named before the kit. The rest of the notes are the same argument at different lengths.

Read in that order if you are new. Skip to the module you need if you already sit at a chair. Either way, the name means this: first-principles periodontology, taught in public, treating the periodontium as a load-bearing, perfused organ.