The lingual plate is a component used in removable partial dentures. Its purpose is to provide stability and connect the various parts of the denture framework. This design helps distribute chewing forces and supports remaining natural teeth, contributing to the prosthetic’s overall function.
Understanding the Lingual Plate
A lingual plate serves as a major connector in removable partial dentures. This component is positioned on the lingual, or tongue-facing, surface of the mandibular (lower) anterior teeth. It is a thin, solid metal piece, typically fabricated from a metal alloy, that extends from a lingual bar and covers the cingula (a bulge on the tooth’s surface) of the anterior teeth.
The lingual plate provides rigidity and stability to the partial denture, connecting components across the dental arch. This connection helps distribute forces evenly across remaining teeth and tissues. Its scalloped design, contoured to intimately contact the lingual surfaces of the teeth above the cingula, also helps seal interproximal spaces, preventing food from becoming trapped.
When a Lingual Plate is Recommended
A lingual plate is often recommended for lower jaw removable partial dentures in specific clinical situations. This includes when the space between the gum margins and the floor of the mouth is limited, typically less than 7-8 millimeters, making a conventional lingual bar impractical. It is also chosen when future loss of anterior teeth is anticipated, simplifying the addition of prosthetic teeth later.
The lingual plate offers additional support and stabilization for anterior teeth, especially those with weakened periodontal support. It can splint these teeth, distributing chewing forces broadly across the remaining dentition. When all lower posterior teeth are missing bilaterally, a lingual plate provides support to the prosthesis. While a lingual bar is an alternative, the lingual plate is favored for broad tissue coverage or when inoperable bony growths (lingual tori) are present.
Adjusting to and Caring for Your Lingual Plate
Adjusting to a new lingual plate requires patience. Initially, you might experience sensations like bulkiness, increased salivation, or temporary speech changes, such as a lisp. These adjustments are normal as your mouth adapts to the appliance, and usually subside within a few weeks. Practicing reading aloud can help improve speech articulation.
Eating with a new lingual plate also requires adaptation. Start with soft foods that require less chewing, such as mashed potatoes, yogurt, or soups. As you become comfortable, gradually introduce firmer foods, cutting them into smaller pieces and chewing on both sides. Avoid very hard, sticky, or crunchy foods initially, as these can dislodge the denture or cause discomfort.
Daily oral hygiene is important when wearing a lingual plate to prevent plaque accumulation, cavities, and gum inflammation. Clean both the partial denture and your natural teeth daily. Remove the partial denture for cleaning, brushing it over a basin of water or a towel to prevent damage if dropped. Use a soft-bristled denture brush with denture cleaning paste or mild soap; avoid regular toothpaste as it can be too abrasive.
Soaking the lingual plate overnight in water or a denture cleaning solution helps keep the acrylic moist and aids in removing stains and loosening plaque. Remove your partial denture before sleeping to allow gum tissues to rest and facilitate natural cleansing by saliva. Regular dental check-ups are important for professional cleaning and any necessary adjustments to ensure the ongoing fit and health of your oral tissues.