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南山南歌词牙体牙髓病学 英文试题

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更新日期:2020-11-20 14:42

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2020年11月20日发(作者:廖升)
牙体牙髓病学 英文试题
一、选择题
1.对牙髓最具有破坏性的是
激光 2激光
C.红激光 D.光固化灯
E.牙髓活力电测定仪
2.感染根管常见的优势菌不包括
A.普氏菌 B.放线菌
C.G

细菌 D.真杆菌
E.梭形杆菌
3.备洞时易损伤牙髓的因素不包括
A.施力大 B.用冷却剂
C.持续常时间钻磨 D.制备深的窝洞
E.不用冷却剂
4.与顽固性根尖周病变和窦道经久不愈可能有关的细菌为
A.普氏菌 B.放线菌
C.G+细菌 D.真杆菌
E.梭形杆菌
5.判断牙髓活力最可靠的检查方法是
A.热诊 B.冷诊
C.牙髓活力电测定 D.试验性备洞
E.X线检查
6.诊断残髓炎最准确的依据是
A.叩诊 B.牙髓活力测试
C.病史 D.症状
E.探查治疗后根管有痛觉

C
C
B
B
D
E
1
7.急性根尖周脓肿最佳的排脓途径
A.从牙周间隙排脓 B.从颊、舌侧粘膜或皮肤排出
C.经根管从龋洞排脓 D.从上颌窦或鼻腔排脓
E.以上都不对
8.感染侵入牙髓组织的途径
A.深龋 B.深牙隐裂
C.深牙周袋 D.重度磨耗
E.以上都有可能
9.根尖周炎疼痛最剧烈的阶段是
A.粘膜下脓肿期 B.骨膜下脓肿期
C.浆液期 D.根尖脓肿期
E.瘘管形成期
10.上颌第一磨牙的根管形态特点是:
A.多数是2根管,即1个颊根管和1个腭根管
B.多数是3根管,即1个近颊、1个远颊和1个腭根管
C.多数是4根管,即2个近颊、1个远颊和1个腭根管
D.多数是4根管,即1个近颊、2个远颊和1个腭根管
E.多数是4根管,即1个近颊、1个远颊和2个腭根管
11.15号标准根管锉的锉尖直径和刃部末端直径分别是:
A.0.10mm和0.47mm B.0.10mm和0.45mm
C.0.15mm和0.45mm D.0.15mm和0.47mm
E.以上都不对
12.弯曲根管预备的常见并发症是:
A.根管台阶 B.药物性根尖周炎
C.牙周组织坏死 D.皮下气肿

C
E
B
C
D
A
2
E.误戏和误咽
13.根管预备的工作长度是指:
A.牙的实际长度 B.从牙冠参照点到牙本质牙釉质界
C.从牙冠参照点到解剖根尖孔 D.从牙冠参照点到生理根尖孔
E.从牙冠参照点到距生理根尖孔0.5~1mm
14.根管成形的标准是:
A.根管比原来直径至少扩大3个器械号
B.根尖预备到20号标准器械
C.根管内无大量渗出
D.根管冲洗无混浊液体
E.根管内无严重气味
15.下列哪一项不是牙髓切断术的潜在并发症:
A.根髓感染 B.根管钙化
C.内吸收 D.牙髓坏死
E.髓室穿孔
16.下列哪一项描述不是玻璃离子粘固剂修复术窝洞预备的特点()
A.玻璃离子粘固剂与牙体组织有化学粘接,对固位形的要求可放宽
B.不必作倒凹、鸠尾等固位形
C.去除龋坏牙本质,必须作预防性扩展
D.窝洞的点、线角圆钝
E.洞缘釉质不作斜面
17.深龋患者激发痛较重,洞底软龋能够彻底去净,治疗方法应选择()
A.双层垫底,一次完成充填治疗
B.局麻下开髓失活,行牙髓治疗
C.先做安抚治疗,待1~2周复诊时症状消除后,再以双层垫底充填治疗

D
A
E
C
C
3
D.实行活髓切断术
E.间接盖髓、双层垫底,一次完成充填治疗
18.临床上不易查出的继发龋可用下列哪些方法帮助诊断()
A.探诊 B.温度测验
C.X线 D.染色法
E.麻醉法
19.深龋备洞时,下列哪项措施是错误的()
A.洞底平、侧壁直,两相垂直 B.去尽腐质
C.保护牙髓 D.洞缘线圆钝
E.尽量保留健康牙体组织
20.复合树脂充填后脱落的原因如下,除了()
A.制备了固位形 B.牙齿表面未注意清洁
C.酸蚀后的牙面接触唾液 D.未制备洞斜面
E.充填体过薄
21.下列哪项不是窝洞的基本固位形( )
A.侧壁固位 B.钉道固位
C.倒凹固位 D.鸠尾固位
E.梯形固位
22.制备倒凹是为了:( )
A.获得良好的抗力形 B.获得良好的固位形
C.便于垫底 D.便于充填
E.便于放置盖髓剂
23.V类洞充填备洞时,要求:( )
A.适当的固位形 B.严格的抗力形
C.必须做鸠尾 D.口小底大

C
A
A
B
B
A
4

E.底平壁直
24.右下颌第一恒磨牙颊面龋洞破坏越过边缘嵴至咬合面窝沟是:( )
A.I类洞 类洞
类洞 类洞
E.V类洞
25.垫底的部位为:( )
A.仅在髓壁 B.仅在轴壁
C.仅在侧壁 D.仅在髓壁和轴壁
E.任何壁均可垫
26.下列说法正确的是
A.男性患龋率略高于女性
B.龋病流行率主要随社会经济模式而变化
C.龋病流行模式依靠地理环境而改变
D.遗传因素对龋病的发生和发展产生重要的影响
E.环境因素对龋病的发生和发展无影响
27.釉质龋损害的4个区不包括
A.坏死区 B.透明带
C.暗带 D.损害体部
E.釉质表面层
28.牙本质龋损在光镜下可看到微生物渗透至牙本质小管的区域是
A.坏死区 B.感染层
C.牙本质脱矿区 D.硬化区
E.修复性牙本质层
29.静止龋属于
A.急性龋 B.慢性龋

A
D
B
A
B
B
5
C.继发龋
E.牙骨质龋
D.牙釉质龋
30.病程进展快,多数牙在短期内同时患龋的急性龋称为
A.湿性龋
C.干性龋
E.猛性龋












B.慢性龋
D.继发龋
E
31. Which is the best way of pain control for endodontic treatment
A Local anesthetics B Devitalization
C Analgesics D Occlusal reduction
E Incising and drainage
32. Which one is not the reason for use of rubber dam
A Protect aspiration or swallowing of instruments or irrigants
B Eliminate the dental fear of patients
C Improve visibility
D Reduced risk of cross-contamination
E Legal considerations
33. The following statements are correct except
A Nearly all canals exhibit a certain degree of curvature.
B There may be more than one canals within one root.
C The apical foramen usually opens at the anatomical apex.
D Apical constriction occurs at 0.5~1mm from the apical foramen.
E Lateral and accessory canals might be the cause of treatment failure.
34. Which one is wrong regarding the principle of access cavity
A Straight-line access
B Conservation of tooth structure
C Unroofing of the chamber and exposure of pulp horns
D .Facial surface of anterior teeth
E Occlusal surface of posterior teeth
35. The advantages of gutta-percha as a filling material are
A It is compactible and adapts excellently to the irregularities and contour of the canal
B It is radiopaque
C It can be easily removed from the canal when necessary
D It can be softened and made plastic by heat or by organic solvents
E All of the above
36. Which one is incorrect about the criteria of the root canal is ready to be filled after the
completion of root canal cleaning and shaping?
A The tooth is asymptomatic. B The canal is wet.
C There is no sinus tract. D There is no foul odor.
E The temporary filling is intact

6
37. Which one is not the pathways of pulpal and periapical infections?
A Dentinal tubules B Pulp exposure
C Gingival D Periodontal ligament
E Anachoresis
38. Tug-back is achieved and the canal is ready for filling
A When the gutta-percha has extended beyond the apex
B When the gutta-percha is easily removed from the root canal
C When the gutta-percha placed to apical constriction exhibits resistance on removal
D After cementation
E None of above
39. Most root canal infections involve
A a single obligate anaerobic species
B multiple anaerobic species only
C mixed aerobic and anaerobic microorganisms
D multiple aerobic species only
E none of above
40. An abnormally shaped tooth that may appear as an extra wide crown,a normal crown
with an extra root,or other combinations resulting from the union of two adjacent tooth
germs by dentin during development is called
A fused teeth B concresence of teeth
C geminated teeth D dilacerations of tooth
E taurodontism
41. Which isn’t the non-operative treatment of dental caries in the following?
A application of fluoride B application of APF gel
C remineralizative therapy D enameloplasty
E pit and fissure sealing
42. Which is not the aim of operative therapy on the dental caries management?
A To remove infected dentine and prohibit caries
B To protect the pulp and avoid pain
C To enhance the strength of the tooth
D To facilitate plaque control
E To restore the appearance(of teeth)and its function
43. Which is the best statement about resistance form
A Resistance form is the design of a cavity in such a way that the remaining tooth substance
and the restorative material can withstand masticatory stress
B The bulk required will depend on the flexural strength of restorative the case of
amalgam it is estimated that a minimum of 1.5-2mm thickness of the restorative material is
required to withstand masticatory stress
C If a marginal ridge is found to be too weak in the cause of an occlusal cavity preparation,a
Class II cavity may have to be prepared instead,so as to eliminate the weak marginal is
particularly indicated where the ridge is only of enamel thickness and unsupported by sound
dentine
D The cavity should be designed that the occlusal margins of the cavity are in areas not
subjected to excessive occlusal trauma,otherwise the enamel wall of the cavity andor the margins

7
of the restorative material may practice,this may be achieved by placing an occlusal
margins of a cavity about one-quarter(14)of the intercuspal ,that efforts should
always be made to conserve sound tooth tissue
E All of the above
44. Which is the most danger area of tooth in dental caries occurred after you have learned
dental caries?
A Pits and fissures on occlusal surfaces of molars and premolars
B Approximal surfaces of all teeth.
C Gingival thirds of all teeth,both on facial and lingual surfaces
D Pits and fissures near the lingual of maxillary incisors and canines(lingual pits)
E Pits and fissures on the buccal of molars
45. Which is not true in the following statement about dental caries and micro-organisms?
A Caries could be induced by specific bacteria,especially mutans
streptococci- group(ococcus mutans and us).
B There are caries occurred when only fed a cariogenic(high sucrose)diet.
C In the’60s Keyes infected germ-free animals with known strains of streptococci and found
that these organisms were transferred to uninfected litter mates who then became susceptible to
thus demonstrated that dental caries was potentially infectious and transmissible.
D When talking about cariogenic microorganisms,we often refer to Streptococcus
mutans,Lactobacillus and Actinomyces.
E Occlusal caries could be prevented using penicillin in animal study.
46. The advantages glass-ionomer cement include
A high adhesion properties
B low abrasion properties
C use as a permanent restoration
D reduction in caries due to fluoride releasing properties
E all of the above
47. Which one of the statements is error in retentive pin placement
A be avoided bifurcation and trifurcation areas
B parallel to the external surface of the tooth
C many pin holes be better placed in different planes
D the length of pin in dentine should be longer than that of in restoration
E be in the hardest dentine
48. The reasons of spontaneous pain after tooth filling include
A mistakenly judge the condition of pulp B neglect small pulp exposure
C irritation of materials to pulp D residual carious dentine
E all of the above
49. Which of the following is a contra- indication to endodontic treatment
A Diabetes
B Pregnancy
C HIV-infected patients
D Patient suffering from heart attack within past 6 months
E Cancer
50. Central cusp is most common in

8
A maxillary the second premolars B maxillary the first premolars
C mandibular the first premolars D mandibular the second premolars
E maxillary the second molars
51. Submerged deciduous teeth occurs most common in
A primary maxillary the second molars B primary maxillary the first molars
C primary central incisors D primary mandibular the second molars
E primary mandibular the first molars
52. In clinical assessment,which is not correct?
A Spontaneous discomfort at night provide a clue as the tooth is inflamed
B Vitalometer tests are very unreliable
C If the tooth is excessively mobile,it may have abnormal root resorption
D Swelling or with a fistulous tract is indicative of a necrotic pulp
E No pain history affirmed no inflammation
53. If you mechanically expose the mesiobuccal pulp horn on the primary maxillary first
carious lesion on the mesial and distal surfaces is moderate,the treatment
now should be
A Pulp capping with Ca(OH)2;restor with silver amalgam
B Pulpotomy;restored with a stainless steel crown
C Pulpectomy;restored with a stainless steel crown
D Pulp capping with Ca(OH)2;restored with a stainless steel crown
E Extraction and a space maintainer
54. The tooth of root fracture should be treated with splint for
A 2-3 weeks B 1-2weeks
C 3-8 weeks D 2-3 months
E 1-2 months
55. In which situation below the pulp would be exposed?
A Enamel infraction B Enamel fraciure
C Enamel-dentin fracture D Complicated crown fracture
E Uncomplicated crown-root fracture
56. We should advocate a routine dental appointment on or before
A the ZERO birthday B the first birthday
C the second birthday D the third birthday
E the six birthday
57. The order of susceptibility of the primary teeth to carious attack is as follows
A Mandibular primary molar>Maxillary primary incisor>Maxillary primary molar>mandibular
primary anterior teeth
B Maxillary primary incisor>Maxillary primary molar>mandibular primary molar>mandibular
primary anterior teeth
C Maxillary primary incisor>mandibular primary molar>mandibular primary anterior
teeth>Maxillary primary molar
D Maxillary primary incisor>mandibular primary molar>Maxillary primary molar>mandibular
primary anterior teeth
E Maxillary primary incisor>mandibular primary anterior teeth>mandibular primary
molar>Maxillary primary molar

9
58. A 7 year’s old boy with bilateral loss of the mandibular primary first and second
molars,which of the following may be best
A Band and loop respectively B Lingual arch
C Removable appliances D Distal shoe
E None of them
59. Clinical features of dental fluorosis do not include
A The lesion symmetrically distributed in the mouth,but not all teeth are equally affected
B The least affected teeth are the incisors and first permanent molars
C Changes from fine white opaque lines running across the tooth on all parts of the enamel to
features where parts of the chalky white and porous outer enamel become detached and discolored
D The loss of surface enamel in the severest cases results in a loss of anatomical form of the
teeth
E Well- demarcated borders lesion along incremental line
60. For intrusive luxation of teeth,the most common complication is
A Pulp necrosis B Osteitis
C Root resorption D Alveolar process resorption
E All of above

二、名词解释
1、acquired pellicle
3、indirect pulp capping
5、自发痛和激发痛
7、Smear layer
9、Initial apical file
























2、resistance form
4、retrograde pilpitis
6、Dentine hypersensitivity
8、Pulpotomy
10、Dental plaque
三、简答题
1.简述影响根管冲洗效果的因素
2.简述深龋的治疗特点
3.简述深龋的治疗特点
4.简述窝洞的基本固位形
5.简述牙隐裂的病因
is the sequelae of root fractures?
briefly describe the benefits of root canal irrigation.
is the goals of pulp therapy in children?
are the properties of the Cariogenic Bacteria?

四、问答题
1、详述窝洞的结构及窝洞预备的基本原则结构

10
2、引起牙髓活力测定误诊的原因是什么?
3、根尖周脓肿与急性牙周脓肿的鉴别要点
4、Please discuss the purpose of root canal preparation and the procedures of Step-down technique.
5、Explain the indications and types of pulp treatment for primary and young permanent teeth.
6、State The Principles Of Cavity Preparation on Amalgam Restoration.











答案
一、选择:
1CCBBD 6 ECEBC
31BCDEB 36CCCAD
11DADAE 16CCCAA 21BBAAD 26BABBE
41DCEAB 46EDEDA 51DEBDD 56BDCEA
二、名词解释
1、acquired pellicle:
唾液蛋白或糖蛋白吸附至牙面所形成的生物膜称获得性膜。
2、resistance form:
修复体和余留牙结构获得足够抗力,在承受合力时不折裂的形状称抗力形。
3、indirect pulp capping(P91)
用具有消炎和促进牙髓-牙本 质修复反应的制剂覆盖于洞底,促进软化牙本质再矿化和修复
性牙本质形成,从而全部生活牙髓的方法叫 间接盖髓术。
4、retrograde pulpitis
逆行性牙髓炎:感染来源于深 牙周袋,通过根尖孔或测副根管逆行入牙髓,引起跟部牙髓的
慢性炎症。
5、自发痛和激发痛
自发痛是指患牙在未受到外界刺激而发生的疼痛。
激发痛是指患牙受到外界刺激而发生的疼痛。

11
e Hypersensitivity
Dentine hypersensitivity is a form of hypersensitivity caused by the effect of
thermal,tactile,osmotic or chemical stimuli on exposed dentine.
layer
Cutting or abrading the hard tissues with rotary and hand instruments produces a little chips or
particles which attached to the tooth surface produce the smear layer
omy
It is indicated for carious or mechanical exposures in primary teeth and to induce root closures in
the young permanent dentition
l apical file
The first file that binds in the canal at WL.
plaque
An adherent deposits of bacteria and their products,which is not mineralized and forms on all
tooth,denture restorations is not an accident accumulation of bacteria but develops in a
sequence of steps.

三、简答题
1、简述影响根管冲洗效果的因素
a药物种类;b根管的直径;c冲洗的液体量;d病变情况;e根管内玷污层
2、简述深龋的治疗特点
a停止龋病发展,促进牙髓的防御性反应;b保护牙髓
c正确判断牙髓状况;d治疗方法:垫底充填,安抚治疗,间接盖髓术
3、简述窝洞的基本固位形
a侧壁固位;b到凹固位;c鸠尾固位;d梯形固位
4.简述牙隐裂的病因
a牙结构的薄弱环节是隐裂牙发生的易感因素
b牙尖斜度愈大,所产生的水平分力愈大
c创伤性合力
is the sequelae of root fractures?
Healing with calcified tissue
Healing with interproximal connective tissue
Healing with interproximal bone and connective tissue
Interproximal inflammatory tissue without healing
briefly describe the benefits of root canal irrigation.
Gross debridement
Frequency and volume of irrigant
Intracanal placement of delivery needle

12
Elimination of microbes
Dissolution of pulp remnants
Removal of the smear layer
Lubricating instrument
is the goals of pulp therapy in children?
?Allowing the tooth to remain in the mouth in a nonpathologic state
?Maintenance of arch length and tooth space
?Restoration of comfort with the ability to chew
?Prevention of speech abnormalities and abnormal habits
are the properties of the Cariogenic Bacteria?
?Acidogenic:they are able to produce acid rapidly from fermentable carbohydrates.?Aciduric:They
thrive under acid conditions.
?Adherent:Able to adhere to the tooth surface because of their ability to synthesize sticky
extracelluar polysaccharides from dietary sugars.

四、问答题
1、详述窝洞的结构及窝洞预备的基本原则
结构
洞壁:测壁,髓壁(轴壁)
洞角:线角,点角,轴髓线角
洞缘:洞缘角
抗力形:洞深,盒状洞形,阶梯结构, 窝洞的外形,去除无基釉和避免形成无基釉,薄壁弱
尖的处理
固位形:侧壁固位,倒凹固位,鸠尾固位,梯形固位
原则
去净龋坏组织
保护牙髓组织
尽量保留健康牙体组织
2、引起牙髓活力测定误诊的原因是什么?
⑴引起假阳性反应的原因
①探头或电极接触了大面积的金属修复体或牙龈,使电流流向了牙周组织;

13
②未充分隔湿或干燥受试牙,以至电流泄漏至牙周;
③液化性坏死的牙髓有可能传导电流至根 尖周,当电流调节到最大刻度时,患者可能会缓慢
抬手示意;
④患者过度紧张和焦虑,以致在探头刚接触牙面或被问知感受时即抬手。
⑵引起假阴性反应的原因
①患者事先用过镇痛剂、麻醉剂或酒精饮料等,使之不能正常地感知电刺激;
②探头或电极未能有效地接触釉质,以致妨碍了电流到达牙髓;
③根尖尚未发育完全的新萌出牙,其牙髓通常对电刺激无反应;
④根管内过度钙化的牙,其牙髓对电刺激通常无反应,常见于一些老年患牙;
⑤刚受到外伤的患牙可能对电刺激无反应。
3.根尖周脓肿与急性牙周脓肿的鉴别要点

感染来源
病史
急性根尖周脓肿
感染根管
较长期牙体缺损史
牙痛史
牙髓治疗史
牙体情况 深龋洞
近髓的非龋疾病
修复体
牙髓活力
牙周袋
脓肿部位
多无

靠近根尖部
多有
深,迂回曲折
较近牙龈炎
一般无牙体疾病
急性牙周脓肿
牙周袋
长期牙周炎史

14
中心位于龈颊沟附近
脓肿范围
疼痛程度
牙松动度
叩痛
X片
较弥漫

相对轻,病愈后牙恢复稳固
很重
无明显异常表现,若患牙为慢性根尖周
炎急性发作者,根尖周牙槽骨显现透射
影像
病程 相对较长,脓液自根尖周向外排除的时
间约需5-6天

discuss the purpose of root canal preparation and the procedures of Step-down
technique.
Purpose of preparation
Cleaning:to remove all contents of the root canal system before and during shaping
Entails the use of irrigants and instruments
Irrigation serves to clean the canal
Shaping:to establish a specific cavity form fulfilling five mechanical objectives
Entails the use of instruments
Instrumentation serves to shape the canal
2.Procedures of step-down technique
Access cavity
Radicular access根管通路
①Straight H or K-files of sizes 15,20,25 and 30 are used to a depth which is 23 of the
radiographic length of the root,or where the file starts to bind against the canal wall(RAL1)
②Anticurvature filing
G-G drills#2(RAL2)and#3(RAL3)are used to continue the coronal flaring
RAL2=RAL1-2mm
RAL3=RAL2-2mm
WL determination
Apical preparation
①Precurved K-files from IAF to MAF are sequential used to WL
②Step-back filing

15
局限于牙周袋壁
相对较轻
明显,消肿后仍很松动
相对较轻
牙槽骨脊破坏,可有骨下袋
相对较短,一般3-4天可自溃
③Recaptulation with MAF or a file that is one size smaller than MAF
Smoothen the root canal preparation

n the indications and types of pulp treatment for primary and young permanent
teeth
?Direct pulp capping
It is the placement of a calcium hydroxide preparation on a small,mechanically induced pulpal
use should be limited to permanent teeth
?Indirect pulp therapy
It is indicated when a deep carious lesion is encroaching on,but not actually into the should
be reserved for permanent teeth only.
?Pulpotomy
It is indicated for carious or mechanical exposures in primary teeth and to induce root closures in
the young permanent dentition
?Pulpectomy
It is the treatment of choice for primary teeth and permanent dentition with nonvital or infected
pulps.
?Apexification
Treatment of nonvital permanent teeth with incomplete apex formation is termed apexification

The Principles Of Cavity Preparation.
Removal Of Dental Caries
Hard standard
Stained standard
Protect pulp
Use sharp instrument
Cold the operating tooth by water
Discontinuity cutting or shaping
Never press to the pulp
Anatomy acknowledges
Cavity preparation is as conservative as possible
Cavity preparation is as conservative as possible
Cavity size and shape are dictated mainly by the extent of the carious lesion.
The cavosurface only extend to the sound dental tissues,not for prevention
Establishing resistance and retention form
Resistance form is the design of a cavity in such a way that the remaining tooth
substance and the restorative material can withstand masticatory achieve
this,the prepared cavity should possess the following attributes:
Flat floor
Adequate bulk of the restorative material,in the case of amalgam it is estimated that a
minimum of 1.5-2mm
Absence of weak cusps or marginal ridges
Occlusal cavity margins in areas not subjected to excessive occlusal practice
one-quarter(14)of the intercuspal width

16
Flat floor at right angles to the line of floor of prepared cavity should be flat
and right angles to the line of occlusal stress,which is usually in the direction of long
axis of the tooth tissue should,however,not be removed simply to obtain a
flat pulpal floor of prepared cavity
Walls of the cavity parallel to the direction of the achieve this,the walls of the
cavity are prepared parallel to the corresponding tooth surfaces
Obtain retention form
Retention form:Retention form refers to those aspects of cavity preparation which
ensure that the restoration is not dislodged from the prepared cavity.
Walls should be parallel or slightly occlusally convergent
Flat walls parallel with or perpendicular to the tooth surface compose the form of these
box-like preparations
Use of dovetail lock in compound cavities
Use of undercuts,pins and grooves
Flat floor and rounded but definite internal line angles
Retention forms:
Undercuts
Dovetail lock
Grooves and boxes
Flat floor and definite internal line angles
pins(钉道固位)
Acid-etch technique(酸蚀)
Adhesives(粘结)




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