Denture Insertion and Delivery
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Direct answer
Delivery begins with the tissue surface, not the teeth: before a processed denture meets the mouth its intaglio is inspected for blebs, spicules and acrylic nodules, because a single sharp pearl can outdo every other error in misery. Insertion then proceeds as a fixed sequence — seat the denture, test the borders for overextension with functional movements, judge retention and stability, correct the occlusion with articulating paper beginning in centric, verify aesthetics and phonetics, and only then hand over the appliance with explicit instructions. The patient leaves knowing that sore spots are expected and treatable, that adjustment visits in the first days are routine rather than failure, and that adaptation of chewing and speech takes weeks. Insertion done in this order converts a laboratory product into a serviceable prosthesis.
What you must remember
- Intaglio first: palatal rugae reproduction, residual monomer washed off, nodules relieved — pressure-indicating paste (PIP) locates pressure zones more honestly than sight alone.
- Border check by function: pull the lip and cheek with the mouth partly open, ask for tongue protrusion and a wide open; an overextended flange shows as blanching or displacement of the denture and is relieved with an acrylic bur.
- Occlusion in order: centric contacts even and simultaneous first, then eccentric adjustments; the statement "the dentures meet the first time as a pair in the patient's mouth" justifies a remount when processed occlusal errors are found.
- Retention and stability are separate exams: retention resists vertical dislodgement (peripheral seal, post dam), stability resists horizontal rock (fit to ridge form).
- Instructions that matter: wear as directed and remove at night to rest the mucosa; clean with a soft brush and non-abrasive cleanser; chew bilaterally and slowly; begin with soft foods; expect increased salivation and odd speech for days.
- Sore-spot protocol: the patient should wear the denture to the adjustment visit (or at least for some hours before) so the lesion localises the fault; patients must never grind the acrylic themselves.
- Recall rhythm: a review within 24–72 hours of delivery, then weekly until settled — the first month manages expectations as much as acrylic.
The first adjustment visit, walked through
The patient returns at 48 hours with a sore left buccal shelf and "looseness" on wide opening. Look first: a circumscribed ulcer opposite the buccal flange's deepest point names an overextended border, and the relieved edge will also stop the denture levering loose on opening — one fault, two symptoms. PIP on the intaglio confirms no broader pressure zone; if it had shown diffuse blanching over the ridge crest, the suspicion would shift to the occlusion instead. Articulating paper then works through centric (a heavy premature molar contact gets relieved) and excursions. The patient is re-instructed on bilateral chewing, and a further review booked in three days. Notice the diagnostic order — tissue fault before occlusal fault before patient habit — because reversing it means adjusting good acrylic for a bad reason.
Where students slip
Two errors recur in examinations and clinics. The first is adjusting the sore spot where the ulcer is, rather than finding what caused it: a lump of pressure-indicating paste marking on the opposite flange, or a deflective occlusal contact two teeth away, is frequently the true culprit, and blind relief of the ulcer site simply thins the flange. The second is under-instructing: the patient who sleeps in the dentures, cleans them with household tooth powder, or chews unilaterally for a month returns with inflammation the operator then blames on "poor fit". The viva favourite — "why should dentures be removed at night?" — expects mucosal rest and reduced candidal colonisation as the twin answers.
Frequently asked questions
What is checked before a denture is first inserted?
The tissue surface for nodules and roughness, residual monomer rinsed away, borders for defects, and then, in the mouth, border extension, retention, stability, occlusion, aesthetics and phonetics in that order.
Why is the occlusion corrected at insertion even after an articulator check?
Processing and mounting errors mean the two dentures often meet differently in the mouth than on the articulator; articulating paper adjustments, or a clinical remount, correct what processing introduced.
Why should dentures be removed at night?
To rest the mucosa and reduce continuous coverage, which lowers the risk of denture stomatitis and residual ridge irritation; six to eight hours out of the mouth daily is the conventional advice.
What instructions accompany a new complete denture?
Eat soft foods chewed bilaterally, clean with a soft brush and non-abrasive cleanser, remove at night, expect salivation and speech changes initially, and report sore spots rather than self-adjusting the acrylic.
When is the first post-insertion review and why?
Within about 24–72 hours, because sore spots appear early and small border or occlusal corrections in the first days prevent ulceration and loss of patient confidence.