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龈上洁治术【PPT展示】

  • 2026-09-23 20:17:46
龈上洁治术【PPT展示】
前两天门诊来了个四十多岁的男病人,一进门就说“医生我想洗个牙,但我怕把牙洗坏了”。我问他怕什么,他说听朋友讲洗牙会损伤牙釉质,而且洗完牙缝会变大,吃东西老塞牙。这个说法我几乎每周都能听到。让他张嘴看了一眼——下前牙舌侧牙结石堆得挺厚,牙龈边缘红肿,探诊出血明显。我跟他说:你现在的牙缝不是洗牙洗出来的,是本来就有,只是被牙结石填满了,等结石清掉之后牙缝会露出来,那是你牙齿本来的样子。
这个“洗牙伤牙”的顾虑,根源在于对超声洁治原理的不了解。超声洁治的核心是振动,不是刮削。工作尖每秒两万到四万五千次的高频微幅振动,把牙结石震碎剥离,而不是像刀一样去刮牙齿。牙釉质的莫氏硬度跟水晶差不多,而工作尖的金属硬度远低于牙釉质。用硬度低的工具去“刮”硬度高的物体,理论上不可能造成损伤。当然前提是操作规范——工作尖侧面与牙面之间形成小于十五度的锐角,接触的是工作尖侧方边缘的前三分之一,而不是尖端直刺牙面。如果角度不对或者用尖端去“啄”牙面,那就不是“洗牙会不会伤牙”的问题了,是操作本身就不合格。
牙龈沟那条线,是洁治操作里最需要心里有数的解剖界限。牙龈沟是游离龈与牙面之间的潜在间隙,正常生理深度小于三毫米,沟底是结合上皮,连接牙龈和牙齿,非常脆弱。龈上洁治的工作范围主要在龈缘以上及龈沟内,工作尖过度向下探入或者施加压力,可能刺伤结合上皮,造成医源性损伤。我平时操作的时候会提醒自己——工作尖的尖端是“禁区”,真正干活的是侧方的振动面,不要用尖端去探沟底。
洁治过程中有一个动作是绝对要避免的——定点悬停。超声能量在同一点持续作用会累积热量,轻则牙髓充血、牙本质过敏,重则牙髓坏死,同时釉质表面会留下永久性划痕。所以我操作的时候会反复提醒自己保持移动,用类似“刷扫”的动作,连续、重叠地走,不在任何一个点上停留太久。这跟超声工作原理有关——振动效应把结石震碎,空穴效应冲刷牙面,冲洗作用降温并冲走碎屑,三者协同的前提是工作尖在持续移动,定点不动的话热量和压力都集中在一点上,物理效应就变成了损伤效应。
说到术后敏感,那个病人后来洁治完当天下午给我打电话,说喝凉水的时候牙齿酸了一下。这种情况其实挺常见的,牙结石去除后,原先被覆盖的牙颈部牙本质暴露出来,牙本质小管把冷刺激传导到牙髓,产生短暂尖锐的酸痛。我让他先别紧张,这几天避免过冷过热的食物,用含硝酸钾的抗过敏牙膏,一般一两周之内会缓解。如果症状持续不缓解或者加重,再来复查涂氟保护漆或者做脱敏处理。他听了之后说“那行,我再观察两天”。这个术后敏感的处理,提前跟病人解释清楚,能省掉很多不必要的焦虑和投诉。
牙面抛光这个步骤我从来不会省。洁治后的牙面有肉眼不可见的划痕,表面相对粗糙,如果不抛光,菌斑和色素会更快地再附着,病人可能很快又觉得牙齿变黄、变粗糙了。用低速手机配合抛光橡皮杯和含细小磨料的抛光膏,轻轻走一遍所有牙面,牙面摸上去是光滑的,菌斑再沉积的速度会明显慢下来。那个病人抛光完之后用舌尖舔了舔牙面,说“好滑啊”,我说这就对了,抛光的意义就在这个触感上。
喷砂洁治是另一个需要单独说的技术。烟斑、茶渍、咖啡渍这些外源性色素,尤其是牙面微小凹陷和窝沟里的色素,超声工作尖有时候够不到。喷砂用高压气流混合特制盐砂和水雾喷射到牙面,物理方式去色素,效果很直接。但有两个注意事项必须清楚——喷嘴不能直接对准牙龈沟或软组织喷射,高压气流可能进入皮下组织,造成皮下气肿;喷砂后的牙面比超声洁治后更粗糙,必须彻底抛光,否则色素会很快再次沉积。我一般把喷砂放在超声洁治之后、抛光之前,顺序理顺了,效果才稳定。
那个病人最后走的时候说了一句“原来洗牙不疼啊”。我笑了笑说,规范操作本来就不应该疼,你之前听说的“疼”可能是操作不规范或者牙周炎症特别重的情况。他出门的时候还回头说了句“那我回去好好刷牙”。我心想,他能把巴氏刷牙法学会了,比来洗十次牙都管用。洁治是牙周健康维护的起点,不是终点。医生把牙结石清干净了,病人回家不认真刷,过几个月又长回来,那这次洁治的意义就打了折扣。所以操作结束之后的宣教环节,我从来不会省略——牙刷怎么选、刷牙角度多少、牙缝刷怎么用、冲牙器能不能替代牙线,这些具体的东西讲清楚了,病人才能真正把洁治的效果维持住。
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  139. /www/wwwroot/h.sjds.net/runtime/temp/c1d6e8c94b2c2fa10e259903674c804d.php ( 8.11 KB )
  140. /www/wwwroot/h.sjds.net/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.000830s ] mysql:host=172.18.0.4;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000605s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000333s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000338s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000525s ]
  6. SELECT * FROM `set` [ RunTime:0.000305s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000763s ]
  8. SELECT * FROM `article` WHERE `id` = 558990 LIMIT 1 [ RunTime:0.000352s ]
  9. UPDATE `article` SET `lasttime` = 1790170657 WHERE `id` = 558990 [ RunTime:0.002550s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000618s ]
  11. SELECT * FROM `article` WHERE `id` < 558990 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000479s ]
  12. SELECT * FROM `article` WHERE `id` > 558990 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000445s ]
  13. SELECT * FROM `article` WHERE `id` < 558990 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000570s ]
  14. SELECT * FROM `article` WHERE `id` < 558990 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000535s ]
  15. SELECT * FROM `article` WHERE `id` < 558990 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000558s ]
0.084958s