Look at the papilla first. Then count the walls.

Do not operate on inflamed tissue. I will start there because the rest of this note is wasted if you skip it.

Full-mouth plaque score under 15 percent. No bleeding on probing at the site. Smoking and diabetes actually controlled, not promised. Re-evaluate six to eight weeks after instrumentation. Fibrous tissue is what holds a suture. Granulation is what pretends to. A flap on a bleeding papilla is a mechanical experiment performed on a material that has not finished being tissue.

Cairo's recession type, not Miller, is the soft-tissue sentence. RT1: no interproximal attachment loss — complete coverage is the expected result, and if you do not get it you should have an explanation that is not biology. RT2: interproximal loss less than or equal to the buccal — partial coverage is the honest plan. RT3: interproximal worse than buccal — do not sell complete coverage. The house-and-hill picture is the one I use with colleagues: soft tissue is a tent. Interproximal bone is the pole. You cannot pitch the tent above the pole. The papilla you wish you had is not a flap design. It is an attachment you already measured.

That is the part GDPs skip when a patient asks for the black triangle back. You can thicken a face. You cannot grow a pole. If the contact is still sitting well above the bone you actually have, coverage height is a preoperative measurement. Selling complete fill on an RT3 is not optimism. It is a category error.

Then the hard tissue. Horizontal loss is not a regeneration container. A crater that has lost its walls is a slope with a membrane fantasy on top. Vertical, angular defects of three millimetres or more can be a container. Count the walls. Three-wall is a well: self-contained, the graft has somewhere to sit, the clot has a room. Two-wall is a crater: it needs a membrane if you want the space to remain a space. One-wall is a slope: hostile. A connective-tissue wall can make a living envelope on that slope — that is a geometric argument, not a 91 percent trial claim, and I will not paste a CV success rate onto a defect I have not seen. The envelope is a hypothesis about containment. The radiograph is still the examination.

Wound stability, space maintenance, tension-free primary closure. Those three are not a product line. They are why the container you counted still exists at day ten. A tunnel preserves lateral supply by skipping vertical releases. That is perfusion again, wearing a different acronym. If you release vertically because the access is prettier, you have spent two nutrient faces for a photograph of the defect.

This is a screening note for colleagues, not a treatment algorithm that replaces examination. I will not give you a fake referral desk or a placeholder telephone number. If the site is RT3, or a one-wall slope you cannot honestly contain, send it to someone who will say no — contact is the door on this site. I work in Zagreb. The patient in front of you still needs your chart, not a protocol copied off a slide.

Look at the papilla first. Then count the walls. Then decide whether you are covering a root or filling a well. Those are different surgeries. Pretending they are the same procedure with a different kit is how a tent ends up above a missing pole.