Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Endo > irrigation > Flashcards

irrigation Flashcards

1
Q

Who found that 5.25% NaOCl has a digestive effect on VITAL pulp tissue, and was most effective in middle and occlusal thirds?

A

Rosenfeld 1978

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Rosenfeld 1978

Irrigation

A

found that 5.25% NaOCl has a digestive effect on VITAL pulp tissue, and was most effective in middle and occlusal thirds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Hand, Smith, Harrison 1978

Irrigation

A

5.25% NaOCl works better than diluted solutions or saline, water or hydrogen peroxide in the dissolution of NECROTIC tissue.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Who said 5.25% NaOCl works better than diluted solutions or saline, water or hydrogen peroxide in the dissolution of NECROTIC tissue.

A

Hand, Smith and Harrison 1978

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Who to use to support NaOCl in vital tissue? In necrotic tissue?

A

Vital tissue: Rosenfeld 1978

Necrotic tissue: Hand, Smith, and Harrison 1978

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Harrison and Hand 1981

A

5.25% NaOCl is an effective antibacterial agent. Its efficacy decreases with dilution. Its efficacy also decreases with addition of organic material

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Who said: 5.25% NaOCl is an effective antibacterial agent. Its efficacy decreases with dilution. Its efficacy also decreases with addition of organic material

A

Harrison and Hand 1981

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Hasselgren 1988

What helps NaOCl dissolve tissue?

A

long-term treatment with Ca(OH)2 can dissolve NECROTIC tissue and pretreatment with Ca(OH)2 can enhance the tissue dissolving effect of NaOCl.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Who said: long-term treatment with Ca(OH)2 can dissolve NECROTIC tissue and pretreatment with Ca(OH)2 can enhance the tissue dissolving effect of NaOCl.

A

Hasselgren 1988

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Nerwich 1993

Calcium hydroxide

A

Calcium hydroxide in extracted teeth created a pH of around 9 in the canal within hours, and outside the tooth within 2 weeks.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Who said: Calcium hydroxide in extracted teeth created a pH of around 9 in the canal within hours, and outside the tooth within 2 weeks.

A

Nerwich 1993

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Bystrom & Sundqvist 1985

calcium hydroxide dressing

A

Calcium hydroxide has a good antibacterial effect. When left in infected root canals for one month, bacteria was only recovered from 3% of them.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Bystrom & Sundqvist 1985

no calcium hydroxide dressing

A

If a two step treatment is done, and no dressing is placed, bacteria regrows to pre-treatment levels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Who said: If a two step treatment is done, and no dressing is placed, bacteria regrows to pre-treatment levels

A

Bystrom & Sundqvist 1985

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Trope and Orstavik 1999

calcium hydroxide

A

The additional disinfecting action of calcium hydroxide before obturation resulted in a 10% increase in healing rates.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

The additional disinfecting action of calcium hydroxide before obturation resulted in a 10% increase in healing rates.

A

Trope and Orstavik 1999

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Sjogren 1991

calcium hydroxide

A

The antibacterial effect of calcium hydroxide as a short-term intracanal dressing showed that the 7-day dressing efficiently eliminated bacteria which survived biomechanical instrumentation of the canal, while the 10-minute application was ineffective.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

who said a 10 minute application of calcium hydroxide is ineffective in eliminating bacteria that survives instrumentation, but a seven day dressing does effectively eliminate the bacteria.

A

Sjogren 1991

calcium hydroxide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Three studies that support calcium hydroxide’s antibacterial effect

A

Trope and Orstavik 1999
Sjogren 1991
Bystrom and Sundqvist 1985

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Who showed that treatment with calcium hydroxide may alter biological properties of bacterial LPS

A

Safavi 1994 (classic)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Safavi 1994

calcium hydroxide

A

treatment with calcium hydroxide may alter biological properties of bacterial LPS (which plays a major role in the development of a periapical bone lesion)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

who said: calcium hydroxide detoxifies lipoteichoic acid (LTA), resulting in attenuation of the inflammatory responses to E. faecalis and its LTA.

A

Baik 2008

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Baik 2008

Calcium hydroxide

A

Treatment with calcium hydroxide alters the biologic properties of LTA (found in E. faecalis), which could mean less of an inflammatory response and bone loss.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Who said Calcium hydroxide messes with:
LPS
LTA

A

LPS: Safavi 1994
LTA: Baik 2008

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Who showed that peak pH levels occur after two weeks, so time required for optimum intracanal activity when using calcium hydroxide mixtures is at least 2 wk, after which it declines?

A

Hosoya 2001

26
Q

Hosoya 2001

A

Who showed that peak pH levels occur after two weeks, so time required for optimum intracanal activity when using calcium hydroxide mixtures is at least 2 wk

27
Q

Sjogren and Sundqvist 1997

number of visits?

A

Study followed PARL cases for five years. After instrumentation, bacterial samples were collected. Negative culture=94% healing. Positive culture=68% healing. So…should do necrotic cases in two appointments so interappt. dressing can decrease bacterial count.

28
Q

Who advocated two visits rather than one because root canals with positive culture after instrumentation have a much lower success rate?

A

Sjogren and Sundqvist 1997

29
Q

Who advocated two visits rather than one because root canals done in two visits with a calcium hydroxide dressing in between resulted in less bacteria in the main canal and in apical ramifications, isthmuses and dentinal tubules?

A

Vera and Siqueira 2012

30
Q

Vera and Siqueira 2012

A

two visits rather than one because root canals done in two visits with a calcium hydroxide dressing in between resulted in less bacteria in the main canal and in apical ramifications, isthmuses and dentinal tubules

31
Q

Two studies to support two visits rather than one?

A

Sjogren and Sundqvist 1997

Vera and Siqueira 2012

32
Q

Clegg 2006

A

Showed that NaOCl 6% is the only thing that removes biofilm and renders bacteria non-viable. (compared to lesser concentrations of NaOCl, MTAD, and chlorhexidine.)

33
Q

Who Showed that NaOCl 6% is the only thing that removes biofilm and renders bacteria non-viable. (compared to lesser concentrations of NaOCl, MTAD, and chlorhexidine.)

A

Clegg 2006

34
Q

Dunavant 2006

A

Showed that 6% NaOCl is better than anything else at killing E. faecalis in biofilms

35
Q

Who Showed that 6% NaOCl is better than anything else at killing E. faecalis in biofilms?

A

Dunavant 2006

36
Q

Who was the first to use NaOCl in endo?

A

Edgar Coolidge

37
Q

Who showed that one minute of ultrasonic irrigation with 6% NaOCl significantly reduced cultivatable bacteria in the canal?

A

Carver 2007

38
Q

Carver 2007-ultrasonic irrigation?

A

One minute of ultrasonic irrigation with 6% NaOCl significantly reduced cultivatable bacteria in the root canal system.

39
Q

Burleson 2007-ultrasonic irrigation?

A

Canals and isthmuses were significantly cleaner after one minute of ultrasonic irrigation with 6% NaOCl per canal.

40
Q

Who showed that canals and isthmuses were significantly cleaner after one minute of ultrasonic irrigation with 6% NaOCl per canal?

A

Burleson 2007

41
Q

Who showed that one minute of EDTA removes significantly more smear layer than 15 or 30 seconds?

A

Saito and Webb 2008

42
Q

What did Saito and Webb 2008 show about EDTA?

A

That one minute of EDTA removes significantly more smear layer than 15 or 30 seconds.

43
Q

What did Basrani 2007 show about chlorhexidine?

A

That mixed with even a small concentration of NaOCl (0.19%) it creates para-chloroaniline precipitate

44
Q

Who showed that mixed with even a small amount of NaOCl, chlorhexidine creates a para-chloroaniline precipitate?

A

Basrani 2007

45
Q

Boessler and Peters 2007

A

During rotary instrumentation, gel lubricants like RC prep clog files (aqueous solution is better than gel).

46
Q

Who showed that during rotary instrumentation, gel lubricants like RC prep clog files (aqueous solution is better than gel)

A

Boessler and Peters 2007

47
Q

Who first recommended NaOCl for irrigation?

A

Coolidge 1919

48
Q

What is EDTA?

A

A calcium chelating agent that removes inorganic material

49
Q

Wesselink 2004

A

chloroform does dissolve gutta percha

50
Q

Vera 2012

A

Maintaining apical patency with a #10 K file 1 mm beyond working length improves irrigant penetration to apical 2 mm of the apex.

51
Q

Calt 2002

A

One minute of EDTA irrigation effectively removes the smear layer. 10 minutes causes excessive inter tubular and peritubular dentinal erosion.

52
Q

Who said that One minute of EDTA irrigation effectively removes the smear layer. 10 minutes causes excessive inter tubular and peritubular dentinal erosion.

A

Calt 2002

53
Q

Who said there is no significant difference in positive cultures obtained from teeth after 2% chlorhexidine irrigation versus 5.25% NaOCl?

A

Jeansonne 1994

54
Q

Jeansonne 1994-irrigation?

A

No significant difference in bacterial reduction when using 2% chlorhexidine versus 5.25% NaOCl for irrigation

55
Q

Who said NaOCl after EDTA causes dentin demineralization–unsure if this affects sealing ability

A

Niu 2002

56
Q

Niu 2002

A

NaOCl after EDTA causes dentin demineralization–unsure if this affects sealing ability

57
Q

Who said do use NaOCl after EDTA

A

Yamada 1983?

58
Q

Who showed the both NaOCl and CHX are effective against C.albicans?

A

Waltimo 1999

59
Q

Who showed in vitro in 2001 that CHX kills E.faecalis in 30 seconds or less, but NaOCl only kills E.faecalis that quickly if it is 5.25%

A

Gomes 2001

60
Q

What portion of dentin does EDTA remove?

A

The inorganic portion (chelates to it).

61
Q

What does MTAD stand for?

A

a Mixture of Tetracycline, Acid and Detergent

62
Q

What is in MTAD?

A

Doxycline, Citric Acid and Tween 80

Endo (20 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions