A temporary crown is a protective cap placed over a prepared tooth while a dental laboratory fabricates the permanent restoration. Its purpose is to shield the vulnerable tooth structure, prevent sensitivity, and maintain the correct spacing in your bite until the final crown is cemented. Due to the materials used for the cap and the adhesive, it is advised to avoid or severely limit soda consumption. This ensures the temporary restoration remains secure and functional during the interim period.
The Primary Risks Posed by Soda
Soda introduces a triple threat: chemical erosion, staining, and thermal stress. The high acidity of most sodas, with pH levels often ranging from 2.5 to 3.5, is capable of eroding the temporary dental cement. This low pH environment can dissolve the weaker cement bond, increasing the likelihood that the crown will loosen or fall off completely.
The sugar in soda fuels plaque-forming bacteria. Because the fit of a temporary crown is not as precise as a permanent one, sugary liquid can easily seep into the small gap around the tooth, creating a high risk of decay underneath the crown. Dark-colored sodas, such as cola, also pose a significant risk of staining the temporary material. The pigments can penetrate the porous surface, leading to discoloration that may leak under the edges and darken the underlying tooth structure.
Understanding Temporary Crown Vulnerability
Temporary crowns are less durable than permanent counterparts made of materials like porcelain or metal. The provisional cap is often fabricated from less robust materials, such as acrylic or composite resins, which are more porous and prone to wear. This porosity makes the temporary crown material particularly susceptible to absorbing dark pigments from beverages, resulting in noticeable staining.
The cement used to hold the temporary crown in place is intentionally weaker than permanent bonding agents. This temporary cement is vulnerable to environmental factors like acids and extreme temperatures. This weaker bond means the temporary crown can be more easily dislodged by sticky foods, high chewing forces, or chemical erosion from acidic drinks. The prepared tooth underneath is prone to heightened sensitivity, as the crown preparation exposes the inner dentin layer.
Guidelines for Beverage Consumption
The safest option while wearing a temporary crown is to choose non-acidic and non-pigmented drinks, such as plain water or milk. If you choose to consume soda, or other acidic beverages, several mitigation steps can minimize the risk to your temporary crown. Using a straw is advisable, as it helps direct the liquid past the temporary crown and minimizes contact with the dental cement.
It is beneficial to drink soda quickly rather than sipping it over a long period, which repeatedly exposes the cement and tooth to acid. Following immediately with a rinse of plain water can help neutralize the acidic environment in the mouth. Avoid extremely cold beverages, as thermal shock can cause the temporary crown material to contract, potentially weakening the seal and causing sensitivity. If the temporary crown feels loose, shifts, or falls off, contact your dental office immediately. Do not attempt to re-cement it with household adhesives; a dentist can provide specific instructions, such as gently placing the crown back with toothpaste or petroleum jelly until you can be seen.