overview
A crown is a restoration that encases the entire tooth surface, protecting it from further decay and protecting underlying teeth from fracture. Crowns are used to restore function and aesthetics following dental procedures such as tooth extraction, root canal therapy, or trauma. They can also be used to support dental Bridges or implant crowns.
There are two main types of crowns: temporary crowns and permanent crowns.
temporary crown
Temporary crowns are made of lightweight materials such as plastic or metal. They are cemented into place temporarily to protect the tooth while the final, more conservative restoration is being made. Temporary crowns are usually worn for a short period, between two to three weeks, before being replaced by a permanent crown. During this time, temporary crowns help maintain the integrity of the surrounding teeth and oral hygiene.
permanent crown
Permanent crowns are made from stronger, denser materials such as porcelain, gold, or zirconia. They are cemented into place and are designed to last for many years, typically five to fifteen years, without the need for further restoration.永久皇冠的优点是它们更接近自然牙齿的外观和感觉，因此通常用于前牙修复。永久皇冠的缺点是它们的治疗过程可能需要多次就诊，并且在某些情况下可能会变黄或磨损。
decision-making factors
在选择临时皇冠还是永久皇冠时，需要考虑多个因素：
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治疗原因：如果是因为简单的蛀牙或小的牙齿损伤而需要修复，可能只需要一个短期解决方案即临时皇冠。
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治疗时间框架：如果计划进行根管治疗或需要一系列的牙科手术来支持植入物或桥接修复，则可能首先需要一个临时皇冠以保护受伤的牙齿。
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维护和成本：短期皇冠更容易丢失或不慎吞咽，这可能导致昂贵的紧急治疗和并发症的风险增加。另一方面，长期皇冠可能需要定期更换和维护，但成本通常更低。
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美学期望：如果患者追求自然外观，如天然牙齿颜色的匹配，永久皇冠可能是更好的选择。
##临时皇冠和永久皇冠各有其适应症和使用场景。选择哪种类型的皇冠很大程度上取决于患者的具体情况、治疗计划以及对美学和功能性的期望。在许多情况下，最佳实践是在牙科诊所接受初步治疗咨询，并由经验丰富的牙医确定最适合的治疗方案。无论选择哪种类型的皇冠，重要的是要在适当的医疗监督下进行定期的口腔护理，以延长牙冠的使用寿命并保持整体的口腔健康。
